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Finding the Fourth Proportional to 18,795.90, 25,920.48 and 11,241

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Solution

The fourth proportional to 18,795.90, 25,920.48 and 11,241 is: 15,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795.90 : 25,920.48 = 11,241 : x
  2. Step 2: Convert to fraction form
    18,795.90/25,920.48 = 11,241/x
  3. Step 3: Cross multiply
    18,795.90x = 25,920.48 × 11,241
  4. Step 4: Simplify right side
    18,795.90x = 291,372,115.68
  5. Step 5: Solve for x
    x = 291,372,115.68/18,795.90
  6. Step 6: Final answer
    x = 15,501.90

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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.