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Finding the Fourth Proportional to 86,166.87, 129,300.84 and 36,243.12

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Solution

The fourth proportional to 86,166.87, 129,300.84 and 36,243.12 is: 54,385.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,166.87 : 129,300.84 = 36,243.12 : x
  2. Step 2: Convert to fraction form
    86,166.87/129,300.84 = 36,243.12/x
  3. Step 3: Cross multiply
    86,166.87x = 129,300.84 × 36,243.12
  4. Step 4: Simplify right side
    86,166.87x = 4,686,265,860.22
  5. Step 5: Solve for x
    x = 4,686,265,860.22/86,166.87
  6. Step 6: Final answer
    x = 54,385.94

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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.