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Finding the Fourth Proportional to 67,931.68, 101,903 and 25,831.92

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Solution

The fourth proportional to 67,931.68, 101,903 and 25,831.92 is: 38,749.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,931.68 : 101,903 = 25,831.92 : x
  2. Step 2: Convert to fraction form
    67,931.68/101,903 = 25,831.92/x
  3. Step 3: Cross multiply
    67,931.68x = 101,903 × 25,831.92
  4. Step 4: Simplify right side
    67,931.68x = 2,632,350,143.76
  5. Step 5: Solve for x
    x = 2,632,350,143.76/67,931.68
  6. Step 6: Final answer
    x = 38,749.96

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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.