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Finding the Fourth Proportional to 89,641.92, 123,704.94 and 49,354.92

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Solution

The fourth proportional to 89,641.92, 123,704.94 and 49,354.92 is: 68,109.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,641.92 : 123,704.94 = 49,354.92 : x
  2. Step 2: Convert to fraction form
    89,641.92/123,704.94 = 49,354.92/x
  3. Step 3: Cross multiply
    89,641.92x = 123,704.94 × 49,354.92
  4. Step 4: Simplify right side
    89,641.92x = 6,105,447,417.30
  5. Step 5: Solve for x
    x = 6,105,447,417.30/89,641.92
  6. Step 6: Final answer
    x = 68,109.29

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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.