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Finding the Fourth Proportional to 7,572.96, 11,359.44 and 7,081.02

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Solution

The fourth proportional to 7,572.96, 11,359.44 and 7,081.02 is: 10,621.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,572.96 : 11,359.44 = 7,081.02 : x
  2. Step 2: Convert to fraction form
    7,572.96/11,359.44 = 7,081.02/x
  3. Step 3: Cross multiply
    7,572.96x = 11,359.44 × 7,081.02
  4. Step 4: Simplify right side
    7,572.96x = 80,436,421.83
  5. Step 5: Solve for x
    x = 80,436,421.83/7,572.96
  6. Step 6: Final answer
    x = 10,621.53

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