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Finding the Fourth Proportional to 65,493.92, 90,381.61 and 35,685.92

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Solution

The fourth proportional to 65,493.92, 90,381.61 and 35,685.92 is: 49,246.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,493.92 : 90,381.61 = 35,685.92 : x
  2. Step 2: Convert to fraction form
    65,493.92/90,381.61 = 35,685.92/x
  3. Step 3: Cross multiply
    65,493.92x = 90,381.61 × 35,685.92
  4. Step 4: Simplify right side
    65,493.92x = 3,225,350,903.93
  5. Step 5: Solve for x
    x = 3,225,350,903.93/65,493.92
  6. Step 6: Final answer
    x = 49,246.57

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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.