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Finding the Fourth Proportional to 178,511.25, 267,767.88 and 45,391.59

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Solution

The fourth proportional to 178,511.25, 267,767.88 and 45,391.59 is: 68,087.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,511.25 : 267,767.88 = 45,391.59 : x
  2. Step 2: Convert to fraction form
    178,511.25/267,767.88 = 45,391.59/x
  3. Step 3: Cross multiply
    178,511.25x = 267,767.88 × 45,391.59
  4. Step 4: Simplify right side
    178,511.25x = 12,154,409,824.13
  5. Step 5: Solve for x
    x = 12,154,409,824.13/178,511.25
  6. Step 6: Final answer
    x = 68,087.64

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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.