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Finding the Fourth Proportional to 113,352.40, 170,028.60 and 66,696.40

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Solution

The fourth proportional to 113,352.40, 170,028.60 and 66,696.40 is: 100,044.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,352.40 : 170,028.60 = 66,696.40 : x
  2. Step 2: Convert to fraction form
    113,352.40/170,028.60 = 66,696.40/x
  3. Step 3: Cross multiply
    113,352.40x = 170,028.60 × 66,696.40
  4. Step 4: Simplify right side
    113,352.40x = 11,340,295,517.04
  5. Step 5: Solve for x
    x = 11,340,295,517.04/113,352.40
  6. Step 6: Final answer
    x = 100,044.60

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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.