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Finding the Fourth Proportional to 86,151.81, 129,230.15 and 23,822.31

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Solution

The fourth proportional to 86,151.81, 129,230.15 and 23,822.31 is: 35,734.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,151.81 : 129,230.15 = 23,822.31 : x
  2. Step 2: Convert to fraction form
    86,151.81/129,230.15 = 23,822.31/x
  3. Step 3: Cross multiply
    86,151.81x = 129,230.15 × 23,822.31
  4. Step 4: Simplify right side
    86,151.81x = 3,078,560,694.65
  5. Step 5: Solve for x
    x = 3,078,560,694.65/86,151.81
  6. Step 6: Final answer
    x = 35,734.14

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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.