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Finding the Fourth Proportional to 60,221.56, 90,299.76 and 47,821.36

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Solution

The fourth proportional to 60,221.56, 90,299.76 and 47,821.36 is: 71,706.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,221.56 : 90,299.76 = 47,821.36 : x
  2. Step 2: Convert to fraction form
    60,221.56/90,299.76 = 47,821.36/x
  3. Step 3: Cross multiply
    60,221.56x = 90,299.76 × 47,821.36
  4. Step 4: Simplify right side
    60,221.56x = 4,318,257,330.87
  5. Step 5: Solve for x
    x = 4,318,257,330.87/60,221.56
  6. Step 6: Final answer
    x = 71,706.17

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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.