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Finding the Fourth Proportional to 19,609.67, 29,414.51 and 7,915.30

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Solution

The fourth proportional to 19,609.67, 29,414.51 and 7,915.30 is: 11,872.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,609.67 : 29,414.51 = 7,915.30 : x
  2. Step 2: Convert to fraction form
    19,609.67/29,414.51 = 7,915.30/x
  3. Step 3: Cross multiply
    19,609.67x = 29,414.51 × 7,915.30
  4. Step 4: Simplify right side
    19,609.67x = 232,824,671.00
  5. Step 5: Solve for x
    x = 232,824,671.00/19,609.67
  6. Step 6: Final answer
    x = 11,872.95

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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.