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Finding the Fourth Proportional to 89,685.84, 123,766.86 and 51,446.88

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Solution

The fourth proportional to 89,685.84, 123,766.86 and 51,446.88 is: 70,996.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,685.84 : 123,766.86 = 51,446.88 : x
  2. Step 2: Convert to fraction form
    89,685.84/123,766.86 = 51,446.88/x
  3. Step 3: Cross multiply
    89,685.84x = 123,766.86 × 51,446.88
  4. Step 4: Simplify right side
    89,685.84x = 6,367,418,794.40
  5. Step 5: Solve for x
    x = 6,367,418,794.40/89,685.84
  6. Step 6: Final answer
    x = 70,996.92

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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.