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Finding the Fourth Proportional to 99,408.60, 148,894.20 and 88,327.80

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Solution

The fourth proportional to 99,408.60, 148,894.20 and 88,327.80 is: 132,297.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,408.60 : 148,894.20 = 88,327.80 : x
  2. Step 2: Convert to fraction form
    99,408.60/148,894.20 = 88,327.80/x
  3. Step 3: Cross multiply
    99,408.60x = 148,894.20 × 88,327.80
  4. Step 4: Simplify right side
    99,408.60x = 13,151,497,118.76
  5. Step 5: Solve for x
    x = 13,151,497,118.76/99,408.60
  6. Step 6: Final answer
    x = 132,297.38

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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.