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Finding the Fourth Proportional to 29,339.66, 43,976.65 and 12,674.72

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Solution

The fourth proportional to 29,339.66, 43,976.65 and 12,674.72 is: 18,997.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,339.66 : 43,976.65 = 12,674.72 : x
  2. Step 2: Convert to fraction form
    29,339.66/43,976.65 = 12,674.72/x
  3. Step 3: Cross multiply
    29,339.66x = 43,976.65 × 12,674.72
  4. Step 4: Simplify right side
    29,339.66x = 557,391,725.29
  5. Step 5: Solve for x
    x = 557,391,725.29/29,339.66
  6. Step 6: Final answer
    x = 18,997.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.