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Finding the Fourth Proportional to 19,636.96, 27,073.90 and 12,725.91

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Solution

The fourth proportional to 19,636.96, 27,073.90 and 12,725.91 is: 17,545.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,636.96 : 27,073.90 = 12,725.91 : x
  2. Step 2: Convert to fraction form
    19,636.96/27,073.90 = 12,725.91/x
  3. Step 3: Cross multiply
    19,636.96x = 27,073.90 × 12,725.91
  4. Step 4: Simplify right side
    19,636.96x = 344,539,815.75
  5. Step 5: Solve for x
    x = 344,539,815.75/19,636.96
  6. Step 6: Final answer
    x = 17,545.48

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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.