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Finding the Fourth Proportional to 178,642.80, 267,575.40 and 108,399.60

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Solution

The fourth proportional to 178,642.80, 267,575.40 and 108,399.60 is: 162,363.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,642.80 : 267,575.40 = 108,399.60 : x
  2. Step 2: Convert to fraction form
    178,642.80/267,575.40 = 108,399.60/x
  3. Step 3: Cross multiply
    178,642.80x = 267,575.40 × 108,399.60
  4. Step 4: Simplify right side
    178,642.80x = 29,005,066,329.84
  5. Step 5: Solve for x
    x = 29,005,066,329.84/178,642.80
  6. Step 6: Final answer
    x = 162,363.48

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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.