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Finding the Fourth Proportional to 86,358.87, 129,542.94 and 27,199.17

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Solution

The fourth proportional to 86,358.87, 129,542.94 and 27,199.17 is: 40,800.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,358.87 : 129,542.94 = 27,199.17 : x
  2. Step 2: Convert to fraction form
    86,358.87/129,542.94 = 27,199.17/x
  3. Step 3: Cross multiply
    86,358.87x = 129,542.94 × 27,199.17
  4. Step 4: Simplify right side
    86,358.87x = 3,523,460,447.36
  5. Step 5: Solve for x
    x = 3,523,460,447.36/86,358.87
  6. Step 6: Final answer
    x = 40,800.21

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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.