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Finding the Fourth Proportional to 78,686.86, 108,584.46 and 44,695.24

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Solution

The fourth proportional to 78,686.86, 108,584.46 and 44,695.24 is: 61,677.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,686.86 : 108,584.46 = 44,695.24 : x
  2. Step 2: Convert to fraction form
    78,686.86/108,584.46 = 44,695.24/x
  3. Step 3: Cross multiply
    78,686.86x = 108,584.46 × 44,695.24
  4. Step 4: Simplify right side
    78,686.86x = 4,853,207,957.05
  5. Step 5: Solve for x
    x = 4,853,207,957.05/78,686.86
  6. Step 6: Final answer
    x = 61,677.49

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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.