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Finding the Fourth Proportional to 714,891.92, 986,548.26 and 392,622.88

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Solution

The fourth proportional to 714,891.92, 986,548.26 and 392,622.88 is: 541,818.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,891.92 : 986,548.26 = 392,622.88 : x
  2. Step 2: Convert to fraction form
    714,891.92/986,548.26 = 392,622.88/x
  3. Step 3: Cross multiply
    714,891.92x = 986,548.26 × 392,622.88
  4. Step 4: Simplify right side
    714,891.92x = 387,341,419,100.19
  5. Step 5: Solve for x
    x = 387,341,419,100.19/714,891.92
  6. Step 6: Final answer
    x = 541,818.15

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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.