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Finding the Fourth Proportional to 291,170.67, 401,734.70 and 187,761.11

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Solution

The fourth proportional to 291,170.67, 401,734.70 and 187,761.11 is: 259,058.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,170.67 : 401,734.70 = 187,761.11 : x
  2. Step 2: Convert to fraction form
    291,170.67/401,734.70 = 187,761.11/x
  3. Step 3: Cross multiply
    291,170.67x = 401,734.70 × 187,761.11
  4. Step 4: Simplify right side
    291,170.67x = 75,430,150,250.04
  5. Step 5: Solve for x
    x = 75,430,150,250.04/291,170.67
  6. Step 6: Final answer
    x = 259,058.21

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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.