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Finding the Fourth Proportional to 7,188.27, 9,919.80 and 4,044.46

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Solution

The fourth proportional to 7,188.27, 9,919.80 and 4,044.46 is: 5,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.27 : 9,919.80 = 4,044.46 : x
  2. Step 2: Convert to fraction form
    7,188.27/9,919.80 = 4,044.46/x
  3. Step 3: Cross multiply
    7,188.27x = 9,919.80 × 4,044.46
  4. Step 4: Simplify right side
    7,188.27x = 40,120,234.31
  5. Step 5: Solve for x
    x = 40,120,234.31/7,188.27
  6. Step 6: Final answer
    x = 5,581.35

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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.