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Finding the Fourth Proportional to 117,965.40, 176,948.10 and 73,728.60

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Solution

The fourth proportional to 117,965.40, 176,948.10 and 73,728.60 is: 110,592.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,965.40 : 176,948.10 = 73,728.60 : x
  2. Step 2: Convert to fraction form
    117,965.40/176,948.10 = 73,728.60/x
  3. Step 3: Cross multiply
    117,965.40x = 176,948.10 × 73,728.60
  4. Step 4: Simplify right side
    117,965.40x = 13,046,135,685.66
  5. Step 5: Solve for x
    x = 13,046,135,685.66/117,965.40
  6. Step 6: Final answer
    x = 110,592.90

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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.