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Finding the Fourth Proportional to 267,788.61, 401,681.18 and 68,107.28

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Solution

The fourth proportional to 267,788.61, 401,681.18 and 68,107.28 is: 102,160.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,788.61 : 401,681.18 = 68,107.28 : x
  2. Step 2: Convert to fraction form
    267,788.61/401,681.18 = 68,107.28/x
  3. Step 3: Cross multiply
    267,788.61x = 401,681.18 × 68,107.28
  4. Step 4: Simplify right side
    267,788.61x = 27,357,410,758.85
  5. Step 5: Solve for x
    x = 27,357,410,758.85/267,788.61
  6. Step 6: Final answer
    x = 102,160.47

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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.