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Finding the Fourth Proportional to 19,551.89, 26,945.42 and 13,886.88

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Solution

The fourth proportional to 19,551.89, 26,945.42 and 13,886.88 is: 19,138.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,551.89 : 26,945.42 = 13,886.88 : x
  2. Step 2: Convert to fraction form
    19,551.89/26,945.42 = 13,886.88/x
  3. Step 3: Cross multiply
    19,551.89x = 26,945.42 × 13,886.88
  4. Step 4: Simplify right side
    19,551.89x = 374,187,744.66
  5. Step 5: Solve for x
    x = 374,187,744.66/19,551.89
  6. Step 6: Final answer
    x = 19,138.19

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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.