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Finding the Fourth Proportional to 78,761.90, 108,694.29 and 44,776.12

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Solution

The fourth proportional to 78,761.90, 108,694.29 and 44,776.12 is: 61,792.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,761.90 : 108,694.29 = 44,776.12 : x
  2. Step 2: Convert to fraction form
    78,761.90/108,694.29 = 44,776.12/x
  3. Step 3: Cross multiply
    78,761.90x = 108,694.29 × 44,776.12
  4. Step 4: Simplify right side
    78,761.90x = 4,866,908,572.35
  5. Step 5: Solve for x
    x = 4,866,908,572.35/78,761.90
  6. Step 6: Final answer
    x = 61,792.68

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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.