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Finding the Fourth Proportional to 86,481.87, 129,712.06 and 23,306.93

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Solution

The fourth proportional to 86,481.87, 129,712.06 and 23,306.93 is: 34,957.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,481.87 : 129,712.06 = 23,306.93 : x
  2. Step 2: Convert to fraction form
    86,481.87/129,712.06 = 23,306.93/x
  3. Step 3: Cross multiply
    86,481.87x = 129,712.06 × 23,306.93
  4. Step 4: Simplify right side
    86,481.87x = 3,023,189,769.57
  5. Step 5: Solve for x
    x = 3,023,189,769.57/86,481.87
  6. Step 6: Final answer
    x = 34,957.50

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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.