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Finding the Fourth Proportional to 65,872.58, 90,956.55 and 60,834.95

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Solution

The fourth proportional to 65,872.58, 90,956.55 and 60,834.95 is: 84,000.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,872.58 : 90,956.55 = 60,834.95 : x
  2. Step 2: Convert to fraction form
    65,872.58/90,956.55 = 60,834.95/x
  3. Step 3: Cross multiply
    65,872.58x = 90,956.55 × 60,834.95
  4. Step 4: Simplify right side
    65,872.58x = 5,533,336,716.64
  5. Step 5: Solve for x
    x = 5,533,336,716.64/65,872.58
  6. Step 6: Final answer
    x = 84,000.61

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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.