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Finding the Fourth Proportional to 86,358.72, 129,538.08 and 33,731.30

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Solution

The fourth proportional to 86,358.72, 129,538.08 and 33,731.30 is: 50,596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,358.72 : 129,538.08 = 33,731.30 : x
  2. Step 2: Convert to fraction form
    86,358.72/129,538.08 = 33,731.30/x
  3. Step 3: Cross multiply
    86,358.72x = 129,538.08 × 33,731.30
  4. Step 4: Simplify right side
    86,358.72x = 4,369,488,161.75
  5. Step 5: Solve for x
    x = 4,369,488,161.75/86,358.72
  6. Step 6: Final answer
    x = 50,596.95

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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.