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Finding the Fourth Proportional to 83,197.86, 114,812.88 and 47,387.88

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Solution

The fourth proportional to 83,197.86, 114,812.88 and 47,387.88 is: 65,395.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,197.86 : 114,812.88 = 47,387.88 : x
  2. Step 2: Convert to fraction form
    83,197.86/114,812.88 = 47,387.88/x
  3. Step 3: Cross multiply
    83,197.86x = 114,812.88 × 47,387.88
  4. Step 4: Simplify right side
    83,197.86x = 5,440,738,979.89
  5. Step 5: Solve for x
    x = 5,440,738,979.89/83,197.86
  6. Step 6: Final answer
    x = 65,395.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.