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Finding the Fourth Proportional to 7,188.32, 9,919.77 and 4,044.52

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Solution

The fourth proportional to 7,188.32, 9,919.77 and 4,044.52 is: 5,581.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.32 : 9,919.77 = 4,044.52 : x
  2. Step 2: Convert to fraction form
    7,188.32/9,919.77 = 4,044.52/x
  3. Step 3: Cross multiply
    7,188.32x = 9,919.77 × 4,044.52
  4. Step 4: Simplify right side
    7,188.32x = 40,120,658.56
  5. Step 5: Solve for x
    x = 40,120,658.56/7,188.32
  6. Step 6: Final answer
    x = 5,581.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.