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Finding the Fourth Proportional to 7,979.67, 12,029.24 and 7,444.47

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Solution

The fourth proportional to 7,979.67, 12,029.24 and 7,444.47 is: 11,222.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.67 : 12,029.24 = 7,444.47 : x
  2. Step 2: Convert to fraction form
    7,979.67/12,029.24 = 7,444.47/x
  3. Step 3: Cross multiply
    7,979.67x = 12,029.24 × 7,444.47
  4. Step 4: Simplify right side
    7,979.67x = 89,551,334.91
  5. Step 5: Solve for x
    x = 89,551,334.91/7,979.67
  6. Step 6: Final answer
    x = 11,222.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.