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Finding the Fourth Proportional to 70,854.15, 106,278.15 and 26,481.29

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Solution

The fourth proportional to 70,854.15, 106,278.15 and 26,481.29 is: 39,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,854.15 : 106,278.15 = 26,481.29 : x
  2. Step 2: Convert to fraction form
    70,854.15/106,278.15 = 26,481.29/x
  3. Step 3: Cross multiply
    70,854.15x = 106,278.15 × 26,481.29
  4. Step 4: Simplify right side
    70,854.15x = 2,814,381,979.42
  5. Step 5: Solve for x
    x = 2,814,381,979.42/70,854.15
  6. Step 6: Final answer
    x = 39,720.78

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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.