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Finding the Fourth Proportional to 714,626.93, 986,186.88 and 392,357.80

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Solution

The fourth proportional to 714,626.93, 986,186.88 and 392,357.80 is: 541,454.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,626.93 : 986,186.88 = 392,357.80 : x
  2. Step 2: Convert to fraction form
    714,626.93/986,186.88 = 392,357.80/x
  3. Step 3: Cross multiply
    714,626.93x = 986,186.88 × 392,357.80
  4. Step 4: Simplify right side
    714,626.93x = 386,938,109,694.73
  5. Step 5: Solve for x
    x = 386,938,109,694.73/714,626.93
  6. Step 6: Final answer
    x = 541,454.70

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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.