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Finding the Fourth Proportional to 78,906.68, 108,876.78 and 44,913.20

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Solution

The fourth proportional to 78,906.68, 108,876.78 and 44,913.20 is: 61,972.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,906.68 : 108,876.78 = 44,913.20 : x
  2. Step 2: Convert to fraction form
    78,906.68/108,876.78 = 44,913.20/x
  3. Step 3: Cross multiply
    78,906.68x = 108,876.78 × 44,913.20
  4. Step 4: Simplify right side
    78,906.68x = 4,890,004,595.50
  5. Step 5: Solve for x
    x = 4,890,004,595.50/78,906.68
  6. Step 6: Final answer
    x = 61,972.00

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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.