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Finding the Fourth Proportional to 14,234.61, 19,644.63 and 7,947.39

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Solution

The fourth proportional to 14,234.61, 19,644.63 and 7,947.39 is: 10,967.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,234.61 : 19,644.63 = 7,947.39 : x
  2. Step 2: Convert to fraction form
    14,234.61/19,644.63 = 7,947.39/x
  3. Step 3: Cross multiply
    14,234.61x = 19,644.63 × 7,947.39
  4. Step 4: Simplify right side
    14,234.61x = 156,123,536.02
  5. Step 5: Solve for x
    x = 156,123,536.02/14,234.61
  6. Step 6: Final answer
    x = 10,967.88

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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.