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Finding the Fourth Proportional to 86,600.77, 129,969.20 and 44,479.15

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Solution

The fourth proportional to 86,600.77, 129,969.20 and 44,479.15 is: 66,753.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,600.77 : 129,969.20 = 44,479.15 : x
  2. Step 2: Convert to fraction form
    86,600.77/129,969.20 = 44,479.15/x
  3. Step 3: Cross multiply
    86,600.77x = 129,969.20 × 44,479.15
  4. Step 4: Simplify right side
    86,600.77x = 5,780,919,542.18
  5. Step 5: Solve for x
    x = 5,780,919,542.18/86,600.77
  6. Step 6: Final answer
    x = 66,753.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.