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Finding the Fourth Proportional to 225,693.02, 338,540.74 and 67,920.40

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Solution

The fourth proportional to 225,693.02, 338,540.74 and 67,920.40 is: 101,880.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,693.02 : 338,540.74 = 67,920.40 : x
  2. Step 2: Convert to fraction form
    225,693.02/338,540.74 = 67,920.40/x
  3. Step 3: Cross multiply
    225,693.02x = 338,540.74 × 67,920.40
  4. Step 4: Simplify right side
    225,693.02x = 22,993,822,477.10
  5. Step 5: Solve for x
    x = 22,993,822,477.10/225,693.02
  6. Step 6: Final answer
    x = 101,880.96

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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.