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Finding the Fourth Proportional to 9,342.39, 12,980.97 and 9,244.89

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Solution

The fourth proportional to 9,342.39, 12,980.97 and 9,244.89 is: 12,845.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,342.39 : 12,980.97 = 9,244.89 : x
  2. Step 2: Convert to fraction form
    9,342.39/12,980.97 = 9,244.89/x
  3. Step 3: Cross multiply
    9,342.39x = 12,980.97 × 9,244.89
  4. Step 4: Simplify right side
    9,342.39x = 120,007,528.61
  5. Step 5: Solve for x
    x = 120,007,528.61/9,342.39
  6. Step 6: Final answer
    x = 12,845.48

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.