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Finding the Fourth Proportional to 65,861.76, 99,284.64 and 60,257.16

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Solution

The fourth proportional to 65,861.76, 99,284.64 and 60,257.16 is: 90,835.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,861.76 : 99,284.64 = 60,257.16 : x
  2. Step 2: Convert to fraction form
    65,861.76/99,284.64 = 60,257.16/x
  3. Step 3: Cross multiply
    65,861.76x = 99,284.64 × 60,257.16
  4. Step 4: Simplify right side
    65,861.76x = 5,982,610,438.02
  5. Step 5: Solve for x
    x = 5,982,610,438.02/65,861.76
  6. Step 6: Final answer
    x = 90,835.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.