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Finding the Fourth Proportional to 60,701.60, 91,049.16 and 18,581.70

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Solution

The fourth proportional to 60,701.60, 91,049.16 and 18,581.70 is: 27,871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,701.60 : 91,049.16 = 18,581.70 : x
  2. Step 2: Convert to fraction form
    60,701.60/91,049.16 = 18,581.70/x
  3. Step 3: Cross multiply
    60,701.60x = 91,049.16 × 18,581.70
  4. Step 4: Simplify right side
    60,701.60x = 1,691,848,083.46
  5. Step 5: Solve for x
    x = 1,691,848,083.46/60,701.60
  6. Step 6: Final answer
    x = 27,871.56

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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.