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Finding the Fourth Proportional to 80,916.71, 121,389.65 and 24,755.77

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Solution

The fourth proportional to 80,916.71, 121,389.65 and 24,755.77 is: 37,138.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,916.71 : 121,389.65 = 24,755.77 : x
  2. Step 2: Convert to fraction form
    80,916.71/121,389.65 = 24,755.77/x
  3. Step 3: Cross multiply
    80,916.71x = 121,389.65 × 24,755.77
  4. Step 4: Simplify right side
    80,916.71x = 3,005,094,014.20
  5. Step 5: Solve for x
    x = 3,005,094,014.20/80,916.71
  6. Step 6: Final answer
    x = 37,138.11

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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.