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Finding the Fourth Proportional to 86,383.66, 129,529.32 and 27,203.44

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Solution

The fourth proportional to 86,383.66, 129,529.32 and 27,203.44 is: 40,790.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,383.66 : 129,529.32 = 27,203.44 : x
  2. Step 2: Convert to fraction form
    86,383.66/129,529.32 = 27,203.44/x
  3. Step 3: Cross multiply
    86,383.66x = 129,529.32 × 27,203.44
  4. Step 4: Simplify right side
    86,383.66x = 3,523,643,084.86
  5. Step 5: Solve for x
    x = 3,523,643,084.86/86,383.66
  6. Step 6: Final answer
    x = 40,790.62

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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.