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Finding the Fourth Proportional to 71,582.15, 107,373.11 and 18,274.13

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Solution

The fourth proportional to 71,582.15, 107,373.11 and 18,274.13 is: 27,411.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,582.15 : 107,373.11 = 18,274.13 : x
  2. Step 2: Convert to fraction form
    71,582.15/107,373.11 = 18,274.13/x
  3. Step 3: Cross multiply
    71,582.15x = 107,373.11 × 18,274.13
  4. Step 4: Simplify right side
    71,582.15x = 1,962,149,542.41
  5. Step 5: Solve for x
    x = 1,962,149,542.41/71,582.15
  6. Step 6: Final answer
    x = 27,411.16

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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.