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Finding the Fourth Proportional to 625,275.97, 863,178.35 and 418,899.71

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Solution

The fourth proportional to 625,275.97, 863,178.35 and 418,899.71 is: 578,280.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,275.97 : 863,178.35 = 418,899.71 : x
  2. Step 2: Convert to fraction form
    625,275.97/863,178.35 = 418,899.71/x
  3. Step 3: Cross multiply
    625,275.97x = 863,178.35 × 418,899.71
  4. Step 4: Simplify right side
    625,275.97x = 361,585,160,493.28
  5. Step 5: Solve for x
    x = 361,585,160,493.28/625,275.97
  6. Step 6: Final answer
    x = 578,280.92

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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.