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Finding the Fourth Proportional to 178,372.80, 267,121.80 and 118,886.40

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Solution

The fourth proportional to 178,372.80, 267,121.80 and 118,886.40 is: 178,038.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,372.80 : 267,121.80 = 118,886.40 : x
  2. Step 2: Convert to fraction form
    178,372.80/267,121.80 = 118,886.40/x
  3. Step 3: Cross multiply
    178,372.80x = 267,121.80 × 118,886.40
  4. Step 4: Simplify right side
    178,372.80x = 31,757,149,163.52
  5. Step 5: Solve for x
    x = 31,757,149,163.52/178,372.80
  6. Step 6: Final answer
    x = 178,038.07

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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.