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Finding the Fourth Proportional to 719,321.82, 992,593.32 and 397,011.12

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Solution

The fourth proportional to 719,321.82, 992,593.32 and 397,011.12 is: 547,836.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,321.82 : 992,593.32 = 397,011.12 : x
  2. Step 2: Convert to fraction form
    719,321.82/992,593.32 = 397,011.12/x
  3. Step 3: Cross multiply
    719,321.82x = 992,593.32 × 397,011.12
  4. Step 4: Simplify right side
    719,321.82x = 394,070,585,677.72
  5. Step 5: Solve for x
    x = 394,070,585,677.72/719,321.82
  6. Step 6: Final answer
    x = 547,836.27

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Double scale
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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.