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Finding the Fourth Proportional to 677,970.28, 935,452.82 and 391,324.29

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Solution

The fourth proportional to 677,970.28, 935,452.82 and 391,324.29 is: 539,943.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,970.28 : 935,452.82 = 391,324.29 : x
  2. Step 2: Convert to fraction form
    677,970.28/935,452.82 = 391,324.29/x
  3. Step 3: Cross multiply
    677,970.28x = 935,452.82 × 391,324.29
  4. Step 4: Simplify right side
    677,970.28x = 366,065,411,593.31
  5. Step 5: Solve for x
    x = 366,065,411,593.31/677,970.28
  6. Step 6: Final answer
    x = 539,943.16

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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.