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Finding the Fourth Proportional to 115,402.40, 173,276.40 and 80,496.80

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Solution

The fourth proportional to 115,402.40, 173,276.40 and 80,496.80 is: 120,865.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,402.40 : 173,276.40 = 80,496.80 : x
  2. Step 2: Convert to fraction form
    115,402.40/173,276.40 = 80,496.80/x
  3. Step 3: Cross multiply
    115,402.40x = 173,276.40 × 80,496.80
  4. Step 4: Simplify right side
    115,402.40x = 13,948,195,715.52
  5. Step 5: Solve for x
    x = 13,948,195,715.52/115,402.40
  6. Step 6: Final answer
    x = 120,865.73

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.