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Finding the Fourth Proportional to 178,643.80, 267,576.90 and 108,400.60

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Solution

The fourth proportional to 178,643.80, 267,576.90 and 108,400.60 is: 162,364.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,643.80 : 267,576.90 = 108,400.60 : x
  2. Step 2: Convert to fraction form
    178,643.80/267,576.90 = 108,400.60/x
  3. Step 3: Cross multiply
    178,643.80x = 267,576.90 × 108,400.60
  4. Step 4: Simplify right side
    178,643.80x = 29,005,496,506.14
  5. Step 5: Solve for x
    x = 29,005,496,506.14/178,643.80
  6. Step 6: Final answer
    x = 162,364.98

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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.