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Finding the Fourth Proportional to 86,384.87, 129,588.24 and 33,787.52

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Solution

The fourth proportional to 86,384.87, 129,588.24 and 33,787.52 is: 50,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,384.87 : 129,588.24 = 33,787.52 : x
  2. Step 2: Convert to fraction form
    86,384.87/129,588.24 = 33,787.52/x
  3. Step 3: Cross multiply
    86,384.87x = 129,588.24 × 33,787.52
  4. Step 4: Simplify right side
    86,384.87x = 4,378,465,250.76
  5. Step 5: Solve for x
    x = 4,378,465,250.76/86,384.87
  6. Step 6: Final answer
    x = 50,685.56

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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.