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Finding the Fourth Proportional to 178,812.60, 268,391.70 and 108,828.60

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Solution

The fourth proportional to 178,812.60, 268,391.70 and 108,828.60 is: 163,348.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,812.60 : 268,391.70 = 108,828.60 : x
  2. Step 2: Convert to fraction form
    178,812.60/268,391.70 = 108,828.60/x
  3. Step 3: Cross multiply
    178,812.60x = 268,391.70 × 108,828.60
  4. Step 4: Simplify right side
    178,812.60x = 29,208,692,962.62
  5. Step 5: Solve for x
    x = 29,208,692,962.62/178,812.60
  6. Step 6: Final answer
    x = 163,348.07

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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.