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Finding the Fourth Proportional to 80,672.81, 121,009.16 and 24,512.69

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Solution

The fourth proportional to 80,672.81, 121,009.16 and 24,512.69 is: 36,769.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,672.81 : 121,009.16 = 24,512.69 : x
  2. Step 2: Convert to fraction form
    80,672.81/121,009.16 = 24,512.69/x
  3. Step 3: Cross multiply
    80,672.81x = 121,009.16 × 24,512.69
  4. Step 4: Simplify right side
    80,672.81x = 2,966,260,252.16
  5. Step 5: Solve for x
    x = 2,966,260,252.16/80,672.81
  6. Step 6: Final answer
    x = 36,769.02

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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.