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Finding the Fourth Proportional to 86,016.65, 129,024.98 and 26,857.39

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Solution

The fourth proportional to 86,016.65, 129,024.98 and 26,857.39 is: 40,286.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,016.65 : 129,024.98 = 26,857.39 : x
  2. Step 2: Convert to fraction form
    86,016.65/129,024.98 = 26,857.39/x
  3. Step 3: Cross multiply
    86,016.65x = 129,024.98 × 26,857.39
  4. Step 4: Simplify right side
    86,016.65x = 3,465,274,207.60
  5. Step 5: Solve for x
    x = 3,465,274,207.60/86,016.65
  6. Step 6: Final answer
    x = 40,286.09

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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.