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Finding the Fourth Proportional to 714,718.44, 986,304.60 and 392,425.74

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Solution

The fourth proportional to 714,718.44, 986,304.60 and 392,425.74 is: 541,543.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,718.44 : 986,304.60 = 392,425.74 : x
  2. Step 2: Convert to fraction form
    714,718.44/986,304.60 = 392,425.74/x
  3. Step 3: Cross multiply
    714,718.44x = 986,304.60 × 392,425.74
  4. Step 4: Simplify right side
    714,718.44x = 387,051,312,520.40
  5. Step 5: Solve for x
    x = 387,051,312,520.40/714,718.44
  6. Step 6: Final answer
    x = 541,543.76

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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.