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Finding the Fourth Proportional to 72,603.60, 108,919.22 and 25,216.89

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Solution

The fourth proportional to 72,603.60, 108,919.22 and 25,216.89 is: 37,830.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,603.60 : 108,919.22 = 25,216.89 : x
  2. Step 2: Convert to fraction form
    72,603.60/108,919.22 = 25,216.89/x
  3. Step 3: Cross multiply
    72,603.60x = 108,919.22 × 25,216.89
  4. Step 4: Simplify right side
    72,603.60x = 2,746,603,863.54
  5. Step 5: Solve for x
    x = 2,746,603,863.54/72,603.60
  6. Step 6: Final answer
    x = 37,830.13

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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.