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Finding the Fourth Proportional to 267,772.91, 401,660.73 and 90,281.45

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Solution

The fourth proportional to 267,772.91, 401,660.73 and 90,281.45 is: 135,422.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,772.91 : 401,660.73 = 90,281.45 : x
  2. Step 2: Convert to fraction form
    267,772.91/401,660.73 = 90,281.45/x
  3. Step 3: Cross multiply
    267,772.91x = 401,660.73 × 90,281.45
  4. Step 4: Simplify right side
    267,772.91x = 36,262,514,370.53
  5. Step 5: Solve for x
    x = 36,262,514,370.53/267,772.91
  6. Step 6: Final answer
    x = 135,422.64

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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.