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Finding the Fourth Proportional to 178,580.40, 267,433.20 and 84,976.80

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Solution

The fourth proportional to 178,580.40, 267,433.20 and 84,976.80 is: 127,257.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,580.40 : 267,433.20 = 84,976.80 : x
  2. Step 2: Convert to fraction form
    178,580.40/267,433.20 = 84,976.80/x
  3. Step 3: Cross multiply
    178,580.40x = 267,433.20 × 84,976.80
  4. Step 4: Simplify right side
    178,580.40x = 22,725,617,549.76
  5. Step 5: Solve for x
    x = 22,725,617,549.76/178,580.40
  6. Step 6: Final answer
    x = 127,257.06

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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.