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Finding the Fourth Proportional to 718,843.86, 992,005.56 and 396,553.32

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Solution

The fourth proportional to 718,843.86, 992,005.56 and 396,553.32 is: 547,244.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,843.86 : 992,005.56 = 396,553.32 : x
  2. Step 2: Convert to fraction form
    718,843.86/992,005.56 = 396,553.32/x
  3. Step 3: Cross multiply
    718,843.86x = 992,005.56 × 396,553.32
  4. Step 4: Simplify right side
    718,843.86x = 393,383,098,276.46
  5. Step 5: Solve for x
    x = 393,383,098,276.46/718,843.86
  6. Step 6: Final answer
    x = 547,244.15

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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.