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Finding the Fourth Proportional to 91,715.68, 126,568.32 and 59,865.76

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Solution

The fourth proportional to 91,715.68, 126,568.32 and 59,865.76 is: 82,615.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,715.68 : 126,568.32 = 59,865.76 : x
  2. Step 2: Convert to fraction form
    91,715.68/126,568.32 = 59,865.76/x
  3. Step 3: Cross multiply
    91,715.68x = 126,568.32 × 59,865.76
  4. Step 4: Simplify right side
    91,715.68x = 7,577,108,668.72
  5. Step 5: Solve for x
    x = 7,577,108,668.72/91,715.68
  6. Step 6: Final answer
    x = 82,615.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.