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Finding the Fourth Proportional to 7,239.48, 10,859.22 and 2,622.48

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Solution

The fourth proportional to 7,239.48, 10,859.22 and 2,622.48 is: 3,933.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.48 : 10,859.22 = 2,622.48 : x
  2. Step 2: Convert to fraction form
    7,239.48/10,859.22 = 2,622.48/x
  3. Step 3: Cross multiply
    7,239.48x = 10,859.22 × 2,622.48
  4. Step 4: Simplify right side
    7,239.48x = 28,478,087.27
  5. Step 5: Solve for x
    x = 28,478,087.27/7,239.48
  6. Step 6: Final answer
    x = 3,933.72

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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.