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Finding the Fourth Proportional to 22,408.61, 33,612.92 and 12,419.49

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Solution

The fourth proportional to 22,408.61, 33,612.92 and 12,419.49 is: 18,629.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,408.61 : 33,612.92 = 12,419.49 : x
  2. Step 2: Convert to fraction form
    22,408.61/33,612.92 = 12,419.49/x
  3. Step 3: Cross multiply
    22,408.61x = 33,612.92 × 12,419.49
  4. Step 4: Simplify right side
    22,408.61x = 417,455,354.86
  5. Step 5: Solve for x
    x = 417,455,354.86/22,408.61
  6. Step 6: Final answer
    x = 18,629.24

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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.