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Finding the Fourth Proportional to 679,174.92, 937,206.54 and 392,713.56

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Solution

The fourth proportional to 679,174.92, 937,206.54 and 392,713.56 is: 541,913.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,174.92 : 937,206.54 = 392,713.56 : x
  2. Step 2: Convert to fraction form
    679,174.92/937,206.54 = 392,713.56/x
  3. Step 3: Cross multiply
    679,174.92x = 937,206.54 × 392,713.56
  4. Step 4: Simplify right side
    679,174.92x = 368,053,716,778.68
  5. Step 5: Solve for x
    x = 368,053,716,778.68/679,174.92
  6. Step 6: Final answer
    x = 541,913.00

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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.