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Finding the Fourth Proportional to 267,699.06, 401,585.65 and 90,256.82

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Solution

The fourth proportional to 267,699.06, 401,585.65 and 90,256.82 is: 135,397.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,699.06 : 401,585.65 = 90,256.82 : x
  2. Step 2: Convert to fraction form
    267,699.06/401,585.65 = 90,256.82/x
  3. Step 3: Cross multiply
    267,699.06x = 401,585.65 × 90,256.82
  4. Step 4: Simplify right side
    267,699.06x = 36,245,841,493.06
  5. Step 5: Solve for x
    x = 36,245,841,493.06/267,699.06
  6. Step 6: Final answer
    x = 135,397.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.