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Finding the Fourth Proportional to 80,407.90, 110,961.39 and 44,109.50

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Solution

The fourth proportional to 80,407.90, 110,961.39 and 44,109.50 is: 60,870.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,407.90 : 110,961.39 = 44,109.50 : x
  2. Step 2: Convert to fraction form
    80,407.90/110,961.39 = 44,109.50/x
  3. Step 3: Cross multiply
    80,407.90x = 110,961.39 × 44,109.50
  4. Step 4: Simplify right side
    80,407.90x = 4,894,451,432.21
  5. Step 5: Solve for x
    x = 4,894,451,432.21/80,407.90
  6. Step 6: Final answer
    x = 60,870.28

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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.