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Finding the Fourth Proportional to 7,247.32, 9,990.30 and 5,972.92

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Solution

The fourth proportional to 7,247.32, 9,990.30 and 5,972.92 is: 8,233.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,247.32 : 9,990.30 = 5,972.92 : x
  2. Step 2: Convert to fraction form
    7,247.32/9,990.30 = 5,972.92/x
  3. Step 3: Cross multiply
    7,247.32x = 9,990.30 × 5,972.92
  4. Step 4: Simplify right side
    7,247.32x = 59,671,262.68
  5. Step 5: Solve for x
    x = 59,671,262.68/7,247.32
  6. Step 6: Final answer
    x = 8,233.56

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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.