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Finding the Fourth Proportional to 267,631.92, 401,448.54 and 90,263.52

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Solution

The fourth proportional to 267,631.92, 401,448.54 and 90,263.52 is: 135,395.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,631.92 : 401,448.54 = 90,263.52 : x
  2. Step 2: Convert to fraction form
    267,631.92/401,448.54 = 90,263.52/x
  3. Step 3: Cross multiply
    267,631.92x = 401,448.54 × 90,263.52
  4. Step 4: Simplify right side
    267,631.92x = 36,236,158,319.26
  5. Step 5: Solve for x
    x = 36,236,158,319.26/267,631.92
  6. Step 6: Final answer
    x = 135,395.50

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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.