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Finding the Fourth Proportional to 7,998.60, 11,938.65 and 7,506.12

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Solution

The fourth proportional to 7,998.60, 11,938.65 and 7,506.12 is: 11,203.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.60 : 11,938.65 = 7,506.12 : x
  2. Step 2: Convert to fraction form
    7,998.60/11,938.65 = 7,506.12/x
  3. Step 3: Cross multiply
    7,998.60x = 11,938.65 × 7,506.12
  4. Step 4: Simplify right side
    7,998.60x = 89,612,939.54
  5. Step 5: Solve for x
    x = 89,612,939.54/7,998.60
  6. Step 6: Final answer
    x = 11,203.58

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.