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Finding the Fourth Proportional to 47,560.59, 71,360.79 and 20,892.82

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Solution

The fourth proportional to 47,560.59, 71,360.79 and 20,892.82 is: 31,347.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,560.59 : 71,360.79 = 20,892.82 : x
  2. Step 2: Convert to fraction form
    47,560.59/71,360.79 = 20,892.82/x
  3. Step 3: Cross multiply
    47,560.59x = 71,360.79 × 20,892.82
  4. Step 4: Simplify right side
    47,560.59x = 1,490,928,140.53
  5. Step 5: Solve for x
    x = 1,490,928,140.53/47,560.59
  6. Step 6: Final answer
    x = 31,347.97

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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.