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Finding the Fourth Proportional to 65,872.33, 90,956.21 and 60,834.70

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Solution

The fourth proportional to 65,872.33, 90,956.21 and 60,834.70 is: 84,000.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,872.33 : 90,956.21 = 60,834.70 : x
  2. Step 2: Convert to fraction form
    65,872.33/90,956.21 = 60,834.70/x
  3. Step 3: Cross multiply
    65,872.33x = 90,956.21 × 60,834.70
  4. Step 4: Simplify right side
    65,872.33x = 5,533,292,989.53
  5. Step 5: Solve for x
    x = 5,533,292,989.53/65,872.33
  6. Step 6: Final answer
    x = 84,000.27

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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.