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Finding the Fourth Proportional to 78,861.60, 108,827.55 and 44,876.84

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Solution

The fourth proportional to 78,861.60, 108,827.55 and 44,876.84 is: 61,929.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,861.60 : 108,827.55 = 44,876.84 : x
  2. Step 2: Convert to fraction form
    78,861.60/108,827.55 = 44,876.84/x
  3. Step 3: Cross multiply
    78,861.60x = 108,827.55 × 44,876.84
  4. Step 4: Simplify right side
    78,861.60x = 4,883,836,004.80
  5. Step 5: Solve for x
    x = 4,883,836,004.80/78,861.60
  6. Step 6: Final answer
    x = 61,929.20

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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.