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Finding the Fourth Proportional to 79,590.60, 109,834.41 and 43,779.83

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Solution

The fourth proportional to 79,590.60, 109,834.41 and 43,779.83 is: 60,415.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,590.60 : 109,834.41 = 43,779.83 : x
  2. Step 2: Convert to fraction form
    79,590.60/109,834.41 = 43,779.83/x
  3. Step 3: Cross multiply
    79,590.60x = 109,834.41 × 43,779.83
  4. Step 4: Simplify right side
    79,590.60x = 4,808,531,412.95
  5. Step 5: Solve for x
    x = 4,808,531,412.95/79,590.60
  6. Step 6: Final answer
    x = 60,415.82

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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.