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Finding the Fourth Proportional to 78,779.66, 108,725.12 and 44,793.23

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Solution

The fourth proportional to 78,779.66, 108,725.12 and 44,793.23 is: 61,819.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,779.66 : 108,725.12 = 44,793.23 : x
  2. Step 2: Convert to fraction form
    78,779.66/108,725.12 = 44,793.23/x
  3. Step 3: Cross multiply
    78,779.66x = 108,725.12 × 44,793.23
  4. Step 4: Simplify right side
    78,779.66x = 4,870,149,354.78
  5. Step 5: Solve for x
    x = 4,870,149,354.78/78,779.66
  6. Step 6: Final answer
    x = 61,819.89

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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.