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Finding the Fourth Proportional to 19,562.72, 27,008.25 and 12,859.57

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Solution

The fourth proportional to 19,562.72, 27,008.25 and 12,859.57 is: 17,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,562.72 : 27,008.25 = 12,859.57 : x
  2. Step 2: Convert to fraction form
    19,562.72/27,008.25 = 12,859.57/x
  3. Step 3: Cross multiply
    19,562.72x = 27,008.25 × 12,859.57
  4. Step 4: Simplify right side
    19,562.72x = 347,314,481.45
  5. Step 5: Solve for x
    x = 347,314,481.45/19,562.72
  6. Step 6: Final answer
    x = 17,753.90

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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.