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Finding the Fourth Proportional to 9,344.34, 12,911.58 and 7,471.38

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Solution

The fourth proportional to 9,344.34, 12,911.58 and 7,471.38 is: 10,323.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,344.34 : 12,911.58 = 7,471.38 : x
  2. Step 2: Convert to fraction form
    9,344.34/12,911.58 = 7,471.38/x
  3. Step 3: Cross multiply
    9,344.34x = 12,911.58 × 7,471.38
  4. Step 4: Simplify right side
    9,344.34x = 96,467,320.58
  5. Step 5: Solve for x
    x = 96,467,320.58/9,344.34
  6. Step 6: Final answer
    x = 10,323.61

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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.