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Finding the Fourth Proportional to 72,603.85, 108,919.59 and 25,217.14

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Solution

The fourth proportional to 72,603.85, 108,919.59 and 25,217.14 is: 37,830.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,603.85 : 108,919.59 = 25,217.14 : x
  2. Step 2: Convert to fraction form
    72,603.85/108,919.59 = 25,217.14/x
  3. Step 3: Cross multiply
    72,603.85x = 108,919.59 × 25,217.14
  4. Step 4: Simplify right side
    72,603.85x = 2,746,640,549.77
  5. Step 5: Solve for x
    x = 2,746,640,549.77/72,603.85
  6. Step 6: Final answer
    x = 37,830.51

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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.