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Finding the Fourth Proportional to 719,057.35, 992,297.99 and 396,767.21

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Solution

The fourth proportional to 719,057.35, 992,297.99 and 396,767.21 is: 547,538.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,057.35 : 992,297.99 = 396,767.21 : x
  2. Step 2: Convert to fraction form
    719,057.35/992,297.99 = 396,767.21/x
  3. Step 3: Cross multiply
    719,057.35x = 992,297.99 × 396,767.21
  4. Step 4: Simplify right side
    719,057.35x = 393,711,306,593.01
  5. Step 5: Solve for x
    x = 393,711,306,593.01/719,057.35
  6. Step 6: Final answer
    x = 547,538.11

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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.