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Finding the Fourth Proportional to 67,988.92, 101,948.37 and 30,516.87

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Solution

The fourth proportional to 67,988.92, 101,948.37 and 30,516.87 is: 45,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,988.92 : 101,948.37 = 30,516.87 : x
  2. Step 2: Convert to fraction form
    67,988.92/101,948.37 = 30,516.87/x
  3. Step 3: Cross multiply
    67,988.92x = 101,948.37 × 30,516.87
  4. Step 4: Simplify right side
    67,988.92x = 3,111,145,154.00
  5. Step 5: Solve for x
    x = 3,111,145,154.00/67,988.92
  6. Step 6: Final answer
    x = 45,759.59

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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.