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Finding the Fourth Proportional to 70,862.35, 106,311.79 and 26,489.43

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Solution

The fourth proportional to 70,862.35, 106,311.79 and 26,489.43 is: 39,740.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,862.35 : 106,311.79 = 26,489.43 : x
  2. Step 2: Convert to fraction form
    70,862.35/106,311.79 = 26,489.43/x
  3. Step 3: Cross multiply
    70,862.35x = 106,311.79 × 26,489.43
  4. Step 4: Simplify right side
    70,862.35x = 2,816,138,719.38
  5. Step 5: Solve for x
    x = 2,816,138,719.38/70,862.35
  6. Step 6: Final answer
    x = 39,740.97

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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.