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Finding the Fourth Proportional to 1,024,978,801.56, 1,539,920,959.28 and 657,234,248.56

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Solution

The fourth proportional to 1,024,978,801.56, 1,539,920,959.28 and 657,234,248.56 is: 987,424,123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,024,978,801.56 : 1,539,920,959.28 = 657,234,248.56 : x
  2. Step 2: Convert to fraction form
    1,024,978,801.56/1,539,920,959.28 = 657,234,248.56/x
  3. Step 3: Cross multiply
    1,024,978,801.56x = 1,539,920,959.28 × 657,234,248.56
  4. Step 4: Simplify right side
    1,024,978,801.56x = 1,012,088,794,514,185,088
  5. Step 5: Solve for x
    x = 1,012,088,794,514,185,088/1,024,978,801.56
  6. Step 6: Final answer
    x = 987,424,123.28

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Double scale
Find fourth proportional to 1,024,978,802.56, 1,539,920,960.78 and 657,234,249.56
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.