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Finding the Fourth Proportional to 12,631.03, 17,432.39 and 7,255.15

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Solution

The fourth proportional to 12,631.03, 17,432.39 and 7,255.15 is: 10,013.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.03 : 17,432.39 = 7,255.15 : x
  2. Step 2: Convert to fraction form
    12,631.03/17,432.39 = 7,255.15/x
  3. Step 3: Cross multiply
    12,631.03x = 17,432.39 × 7,255.15
  4. Step 4: Simplify right side
    12,631.03x = 126,474,604.31
  5. Step 5: Solve for x
    x = 126,474,604.31/12,631.03
  6. Step 6: Final answer
    x = 10,013.01

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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.