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Finding the Fourth Proportional to 9,344.56, 12,895.80 and 5,366.38

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Solution

The fourth proportional to 9,344.56, 12,895.80 and 5,366.38 is: 7,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,344.56 : 12,895.80 = 5,366.38 : x
  2. Step 2: Convert to fraction form
    9,344.56/12,895.80 = 5,366.38/x
  3. Step 3: Cross multiply
    9,344.56x = 12,895.80 × 5,366.38
  4. Step 4: Simplify right side
    9,344.56x = 69,203,763.20
  5. Step 5: Solve for x
    x = 69,203,763.20/9,344.56
  6. Step 6: Final answer
    x = 7,405.78

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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.