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Finding the Fourth Proportional to 178,339.96, 267,625.88 and 77,236.78

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Solution

The fourth proportional to 178,339.96, 267,625.88 and 77,236.78 is: 115,905.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,339.96 : 267,625.88 = 77,236.78 : x
  2. Step 2: Convert to fraction form
    178,339.96/267,625.88 = 77,236.78/x
  3. Step 3: Cross multiply
    178,339.96x = 267,625.88 × 77,236.78
  4. Step 4: Simplify right side
    178,339.96x = 20,670,561,215.87
  5. Step 5: Solve for x
    x = 20,670,561,215.87/178,339.96
  6. Step 6: Final answer
    x = 115,905.38

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1.5x scale

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.