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Finding the Fourth Proportional to 267,695.76, 401,580.66 and 90,253.44

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Solution

The fourth proportional to 267,695.76, 401,580.66 and 90,253.44 is: 135,392.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,695.76 : 401,580.66 = 90,253.44 : x
  2. Step 2: Convert to fraction form
    267,695.76/401,580.66 = 90,253.44/x
  3. Step 3: Cross multiply
    267,695.76x = 401,580.66 × 90,253.44
  4. Step 4: Simplify right side
    267,695.76x = 36,244,036,002.47
  5. Step 5: Solve for x
    x = 36,244,036,002.47/267,695.76
  6. Step 6: Final answer
    x = 135,392.64

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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.