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Finding the Fourth Proportional to 92,861.62, 128,151.66 and 54,623.95

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Solution

The fourth proportional to 92,861.62, 128,151.66 and 54,623.95 is: 75,382.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,861.62 : 128,151.66 = 54,623.95 : x
  2. Step 2: Convert to fraction form
    92,861.62/128,151.66 = 54,623.95/x
  3. Step 3: Cross multiply
    92,861.62x = 128,151.66 × 54,623.95
  4. Step 4: Simplify right side
    92,861.62x = 7,000,149,868.26
  5. Step 5: Solve for x
    x = 7,000,149,868.26/92,861.62
  6. Step 6: Final answer
    x = 75,382.59

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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.