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Finding the Fourth Proportional to 217,603.36, 326,317.68 and 67,794.40

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Solution

The fourth proportional to 217,603.36, 326,317.68 and 67,794.40 is: 101,664.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,603.36 : 326,317.68 = 67,794.40 : x
  2. Step 2: Convert to fraction form
    217,603.36/326,317.68 = 67,794.40/x
  3. Step 3: Cross multiply
    217,603.36x = 326,317.68 × 67,794.40
  4. Step 4: Simplify right side
    217,603.36x = 22,122,511,324.99
  5. Step 5: Solve for x
    x = 22,122,511,324.99/217,603.36
  6. Step 6: Final answer
    x = 101,664.38

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1.5x scale

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.