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Finding the Fourth Proportional to 78,871.86, 108,829.17 and 44,874.95

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Solution

The fourth proportional to 78,871.86, 108,829.17 and 44,874.95 is: 61,919.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,871.86 : 108,829.17 = 44,874.95 : x
  2. Step 2: Convert to fraction form
    78,871.86/108,829.17 = 44,874.95/x
  3. Step 3: Cross multiply
    78,871.86x = 108,829.17 × 44,874.95
  4. Step 4: Simplify right side
    78,871.86x = 4,883,703,018.15
  5. Step 5: Solve for x
    x = 4,883,703,018.15/78,871.86
  6. Step 6: Final answer
    x = 61,919.46

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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.