Home / 38,476,777,815.78-53,097,952,235.21-21,329,587,644.21

Finding the Fourth Proportional to 38,476,777,815.78, 53,097,952,235.21 and 21,329,587,644.21

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Solution

The fourth proportional to 38,476,777,815.78, 53,097,952,235.21 and 21,329,587,644.21 is: 29,434,830,311.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,476,777,815.78 : 53,097,952,235.21 = 21,329,587,644.21 : x
  2. Step 2: Convert to fraction form
    38,476,777,815.78/53,097,952,235.21 = 21,329,587,644.21/x
  3. Step 3: Cross multiply
    38,476,777,815.78x = 53,097,952,235.21 × 21,329,587,644.21
  4. Step 4: Simplify right side
    38,476,777,815.78x = 1,132,557,425,928,722,579,456
  5. Step 5: Solve for x
    x = 1,132,557,425,928,722,579,456/38,476,777,815.78
  6. Step 6: Final answer
    x = 29,434,830,311.19

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Double scale
Find fourth proportional to 38,476,777,816.78, 53,097,952,236.59 and 21,329,587,645.21
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.