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Finding the Fourth Proportional to 72,168.60, 108,233.70 and 22,248.60

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Solution

The fourth proportional to 72,168.60, 108,233.70 and 22,248.60 is: 33,366.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,168.60 : 108,233.70 = 22,248.60 : x
  2. Step 2: Convert to fraction form
    72,168.60/108,233.70 = 22,248.60/x
  3. Step 3: Cross multiply
    72,168.60x = 108,233.70 × 22,248.60
  4. Step 4: Simplify right side
    72,168.60x = 2,408,048,297.82
  5. Step 5: Solve for x
    x = 2,408,048,297.82/72,168.60
  6. Step 6: Final answer
    x = 33,366.98

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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.