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Finding the Fourth Proportional to 178,328.40, 267,265.80 and 73,028.40

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Solution

The fourth proportional to 178,328.40, 267,265.80 and 73,028.40 is: 109,449.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,328.40 : 267,265.80 = 73,028.40 : x
  2. Step 2: Convert to fraction form
    178,328.40/267,265.80 = 73,028.40/x
  3. Step 3: Cross multiply
    178,328.40x = 267,265.80 × 73,028.40
  4. Step 4: Simplify right side
    178,328.40x = 19,517,993,748.72
  5. Step 5: Solve for x
    x = 19,517,993,748.72/178,328.40
  6. Step 6: Final answer
    x = 109,449.72

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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.