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Finding the Fourth Proportional to 8,924.67, 12,305.63 and 7,240.82

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Solution

The fourth proportional to 8,924.67, 12,305.63 and 7,240.82 is: 9,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,924.67 : 12,305.63 = 7,240.82 : x
  2. Step 2: Convert to fraction form
    8,924.67/12,305.63 = 7,240.82/x
  3. Step 3: Cross multiply
    8,924.67x = 12,305.63 × 7,240.82
  4. Step 4: Simplify right side
    8,924.67x = 89,102,754.08
  5. Step 5: Solve for x
    x = 89,102,754.08/8,924.67
  6. Step 6: Final answer
    x = 9,983.87

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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.