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Finding the Fourth Proportional to 69,081.65, 103,677.15 and 26,981.90

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Solution

The fourth proportional to 69,081.65, 103,677.15 and 26,981.90 is: 40,494.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,081.65 : 103,677.15 = 26,981.90 : x
  2. Step 2: Convert to fraction form
    69,081.65/103,677.15 = 26,981.90/x
  3. Step 3: Cross multiply
    69,081.65x = 103,677.15 × 26,981.90
  4. Step 4: Simplify right side
    69,081.65x = 2,797,406,493.59
  5. Step 5: Solve for x
    x = 2,797,406,493.59/69,081.65
  6. Step 6: Final answer
    x = 40,494.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.