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Finding the Fourth Proportional to 178,630.14, 267,969.84 and 66,300.80

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Solution

The fourth proportional to 178,630.14, 267,969.84 and 66,300.80 is: 99,460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,630.14 : 267,969.84 = 66,300.80 : x
  2. Step 2: Convert to fraction form
    178,630.14/267,969.84 = 66,300.80/x
  3. Step 3: Cross multiply
    178,630.14x = 267,969.84 × 66,300.80
  4. Step 4: Simplify right side
    178,630.14x = 17,766,615,999.80
  5. Step 5: Solve for x
    x = 17,766,615,999.80/178,630.14
  6. Step 6: Final answer
    x = 99,460.35

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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.