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Finding the Fourth Proportional to 193,889.60, 290,834.40 and 115,246.40

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Solution

The fourth proportional to 193,889.60, 290,834.40 and 115,246.40 is: 172,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,889.60 : 290,834.40 = 115,246.40 : x
  2. Step 2: Convert to fraction form
    193,889.60/290,834.40 = 115,246.40/x
  3. Step 3: Cross multiply
    193,889.60x = 290,834.40 × 115,246.40
  4. Step 4: Simplify right side
    193,889.60x = 33,517,617,596.16
  5. Step 5: Solve for x
    x = 33,517,617,596.16/193,889.60
  6. Step 6: Final answer
    x = 172,869.60

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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.