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Finding the Fourth Proportional to 86,161.86, 129,173.08 and 38,742.24

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Solution

The fourth proportional to 86,161.86, 129,173.08 and 38,742.24 is: 58,082.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,161.86 : 129,173.08 = 38,742.24 : x
  2. Step 2: Convert to fraction form
    86,161.86/129,173.08 = 38,742.24/x
  3. Step 3: Cross multiply
    86,161.86x = 129,173.08 × 38,742.24
  4. Step 4: Simplify right side
    86,161.86x = 5,004,454,466.90
  5. Step 5: Solve for x
    x = 5,004,454,466.90/86,161.86
  6. Step 6: Final answer
    x = 58,082.02

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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.