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Finding the Fourth Proportional to 86,189.68, 129,284.53 and 27,030.52

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Solution

The fourth proportional to 86,189.68, 129,284.53 and 27,030.52 is: 40,545.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,189.68 : 129,284.53 = 27,030.52 : x
  2. Step 2: Convert to fraction form
    86,189.68/129,284.53 = 27,030.52/x
  3. Step 3: Cross multiply
    86,189.68x = 129,284.53 × 27,030.52
  4. Step 4: Simplify right side
    86,189.68x = 3,494,628,073.86
  5. Step 5: Solve for x
    x = 3,494,628,073.86/86,189.68
  6. Step 6: Final answer
    x = 40,545.78

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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.