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Finding the Fourth Proportional to 79,585.10, 109,829.22 and 43,778.24

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Solution

The fourth proportional to 79,585.10, 109,829.22 and 43,778.24 is: 60,414.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,585.10 : 109,829.22 = 43,778.24 : x
  2. Step 2: Convert to fraction form
    79,585.10/109,829.22 = 43,778.24/x
  3. Step 3: Cross multiply
    79,585.10x = 109,829.22 × 43,778.24
  4. Step 4: Simplify right side
    79,585.10x = 4,808,129,952.17
  5. Step 5: Solve for x
    x = 4,808,129,952.17/79,585.10
  6. Step 6: Final answer
    x = 60,414.95

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1.5x scale

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.