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Finding the Fourth Proportional to 714,349.87, 985,863.30 and 392,114.54

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Solution

The fourth proportional to 714,349.87, 985,863.30 and 392,114.54 is: 541,151.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,349.87 : 985,863.30 = 392,114.54 : x
  2. Step 2: Convert to fraction form
    714,349.87/985,863.30 = 392,114.54/x
  3. Step 3: Cross multiply
    714,349.87x = 985,863.30 × 392,114.54
  4. Step 4: Simplify right side
    714,349.87x = 386,571,334,382.38
  5. Step 5: Solve for x
    x = 386,571,334,382.38/714,349.87
  6. Step 6: Final answer
    x = 541,151.26

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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.