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Finding the Fourth Proportional to 9,789.68, 14,697.48 and 9,372.80

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Solution

The fourth proportional to 9,789.68, 14,697.48 and 9,372.80 is: 14,071.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,789.68 : 14,697.48 = 9,372.80 : x
  2. Step 2: Convert to fraction form
    9,789.68/14,697.48 = 9,372.80/x
  3. Step 3: Cross multiply
    9,789.68x = 14,697.48 × 9,372.80
  4. Step 4: Simplify right side
    9,789.68x = 137,756,540.54
  5. Step 5: Solve for x
    x = 137,756,540.54/9,789.68
  6. Step 6: Final answer
    x = 14,071.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.