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Finding the Fourth Proportional to 9,202.76, 12,700.11 and 5,170.30

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Solution

The fourth proportional to 9,202.76, 12,700.11 and 5,170.30 is: 7,135.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,202.76 : 12,700.11 = 5,170.30 : x
  2. Step 2: Convert to fraction form
    9,202.76/12,700.11 = 5,170.30/x
  3. Step 3: Cross multiply
    9,202.76x = 12,700.11 × 5,170.30
  4. Step 4: Simplify right side
    9,202.76x = 65,663,378.73
  5. Step 5: Solve for x
    x = 65,663,378.73/9,202.76
  6. Step 6: Final answer
    x = 7,135.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.