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Finding the Fourth Proportional to 57,492.55, 86,251.78 and 17,515.11

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Solution

The fourth proportional to 57,492.55, 86,251.78 and 17,515.11 is: 26,276.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,492.55 : 86,251.78 = 17,515.11 : x
  2. Step 2: Convert to fraction form
    57,492.55/86,251.78 = 17,515.11/x
  3. Step 3: Cross multiply
    57,492.55x = 86,251.78 × 17,515.11
  4. Step 4: Simplify right side
    57,492.55x = 1,510,709,414.40
  5. Step 5: Solve for x
    x = 1,510,709,414.40/57,492.55
  6. Step 6: Final answer
    x = 26,276.61

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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.