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Finding the Fourth Proportional to 625,276.97, 863,179.73 and 418,900.71

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Solution

The fourth proportional to 625,276.97, 863,179.73 and 418,900.71 is: 578,282.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,276.97 : 863,179.73 = 418,900.71 : x
  2. Step 2: Convert to fraction form
    625,276.97/863,179.73 = 418,900.71/x
  3. Step 3: Cross multiply
    625,276.97x = 863,179.73 × 418,900.71
  4. Step 4: Simplify right side
    625,276.97x = 361,586,601,754.61
  5. Step 5: Solve for x
    x = 361,586,601,754.61/625,276.97
  6. Step 6: Final answer
    x = 578,282.30

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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.