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Finding the Fourth Proportional to 86,437.92, 129,582.92 and 33,168.12

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Solution

The fourth proportional to 86,437.92, 129,582.92 and 33,168.12 is: 49,723.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,437.92 : 129,582.92 = 33,168.12 : x
  2. Step 2: Convert to fraction form
    86,437.92/129,582.92 = 33,168.12/x
  3. Step 3: Cross multiply
    86,437.92x = 129,582.92 × 33,168.12
  4. Step 4: Simplify right side
    86,437.92x = 4,298,022,081.55
  5. Step 5: Solve for x
    x = 4,298,022,081.55/86,437.92
  6. Step 6: Final answer
    x = 49,723.81

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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.