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Finding the Fourth Proportional to 79,587.61, 109,829.11 and 43,776.83

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Solution

The fourth proportional to 79,587.61, 109,829.11 and 43,776.83 is: 60,411.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,587.61 : 109,829.11 = 43,776.83 : x
  2. Step 2: Convert to fraction form
    79,587.61/109,829.11 = 43,776.83/x
  3. Step 3: Cross multiply
    79,587.61x = 109,829.11 × 43,776.83
  4. Step 4: Simplify right side
    79,587.61x = 4,807,970,277.52
  5. Step 5: Solve for x
    x = 4,807,970,277.52/79,587.61
  6. Step 6: Final answer
    x = 60,411.04

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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.