Home / 38,689,153.78-53,391,029.97-21,285,125.23

Finding the Fourth Proportional to 38,689,153.78, 53,391,029.97 and 21,285,125.23

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Solution

The fourth proportional to 38,689,153.78, 53,391,029.97 and 21,285,125.23 is: 29,373,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,689,153.78 : 53,391,029.97 = 21,285,125.23 : x
  2. Step 2: Convert to fraction form
    38,689,153.78/53,391,029.97 = 21,285,125.23/x
  3. Step 3: Cross multiply
    38,689,153.78x = 53,391,029.97 × 21,285,125.23
  4. Step 4: Simplify right side
    38,689,153.78x = 1,136,434,759,070,133.25
  5. Step 5: Solve for x
    x = 1,136,434,759,070,133.25/38,689,153.78
  6. Step 6: Final answer
    x = 29,373,471.58

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Double scale
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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.