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Finding the Fourth Proportional to 69,091.70, 103,637.55 and 24,719.90

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Solution

The fourth proportional to 69,091.70, 103,637.55 and 24,719.90 is: 37,079.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,091.70 : 103,637.55 = 24,719.90 : x
  2. Step 2: Convert to fraction form
    69,091.70/103,637.55 = 24,719.90/x
  3. Step 3: Cross multiply
    69,091.70x = 103,637.55 × 24,719.90
  4. Step 4: Simplify right side
    69,091.70x = 2,561,909,872.25
  5. Step 5: Solve for x
    x = 2,561,909,872.25/69,091.70
  6. Step 6: Final answer
    x = 37,079.85

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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.