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Finding the Fourth Proportional to 215,693.28, 323,540.72 and 65,932.99

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Solution

The fourth proportional to 215,693.28, 323,540.72 and 65,932.99 is: 98,899.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,693.28 : 323,540.72 = 65,932.99 : x
  2. Step 2: Convert to fraction form
    215,693.28/323,540.72 = 65,932.99/x
  3. Step 3: Cross multiply
    215,693.28x = 323,540.72 × 65,932.99
  4. Step 4: Simplify right side
    215,693.28x = 21,332,007,056.35
  5. Step 5: Solve for x
    x = 21,332,007,056.35/215,693.28
  6. Step 6: Final answer
    x = 98,899.73

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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.