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Finding the Fourth Proportional to 267,663.80, 401,368.60 and 155,378.44

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Solution

The fourth proportional to 267,663.80, 401,368.60 and 155,378.44 is: 232,993.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,663.80 : 401,368.60 = 155,378.44 : x
  2. Step 2: Convert to fraction form
    267,663.80/401,368.60 = 155,378.44/x
  3. Step 3: Cross multiply
    267,663.80x = 401,368.60 × 155,378.44
  4. Step 4: Simplify right side
    267,663.80x = 62,364,026,932.98
  5. Step 5: Solve for x
    x = 62,364,026,932.98/267,663.80
  6. Step 6: Final answer
    x = 232,993.88

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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.