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Finding the Fourth Proportional to 9,371.70, 12,934.20 and 5,392.68

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Solution

The fourth proportional to 9,371.70, 12,934.20 and 5,392.68 is: 7,442.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,371.70 : 12,934.20 = 5,392.68 : x
  2. Step 2: Convert to fraction form
    9,371.70/12,934.20 = 5,392.68/x
  3. Step 3: Cross multiply
    9,371.70x = 12,934.20 × 5,392.68
  4. Step 4: Simplify right side
    9,371.70x = 69,750,001.66
  5. Step 5: Solve for x
    x = 69,750,001.66/9,371.70
  6. Step 6: Final answer
    x = 7,442.62

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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.