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Finding the Fourth Proportional to 19,773.18, 29,642.97 and 8,671.44

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Solution

The fourth proportional to 19,773.18, 29,642.97 and 8,671.44 is: 12,999.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,773.18 : 29,642.97 = 8,671.44 : x
  2. Step 2: Convert to fraction form
    19,773.18/29,642.97 = 8,671.44/x
  3. Step 3: Cross multiply
    19,773.18x = 29,642.97 × 8,671.44
  4. Step 4: Simplify right side
    19,773.18x = 257,047,235.78
  5. Step 5: Solve for x
    x = 257,047,235.78/19,773.18
  6. Step 6: Final answer
    x = 12,999.79

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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.