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Finding the Fourth Proportional to 118,364.20, 177,546.30 and 74,127.40

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Solution

The fourth proportional to 118,364.20, 177,546.30 and 74,127.40 is: 111,191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,364.20 : 177,546.30 = 74,127.40 : x
  2. Step 2: Convert to fraction form
    118,364.20/177,546.30 = 74,127.40/x
  3. Step 3: Cross multiply
    118,364.20x = 177,546.30 × 74,127.40
  4. Step 4: Simplify right side
    118,364.20x = 13,161,045,598.62
  5. Step 5: Solve for x
    x = 13,161,045,598.62/118,364.20
  6. Step 6: Final answer
    x = 111,191.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.