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Finding the Fourth Proportional to 7,221.70, 10,832.55 and 5,763.70

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Solution

The fourth proportional to 7,221.70, 10,832.55 and 5,763.70 is: 8,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.70 : 10,832.55 = 5,763.70 : x
  2. Step 2: Convert to fraction form
    7,221.70/10,832.55 = 5,763.70/x
  3. Step 3: Cross multiply
    7,221.70x = 10,832.55 × 5,763.70
  4. Step 4: Simplify right side
    7,221.70x = 62,435,568.44
  5. Step 5: Solve for x
    x = 62,435,568.44/7,221.70
  6. Step 6: Final answer
    x = 8,645.55

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Half scale
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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.