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Finding the Fourth Proportional to 109,905.40, 164,858.10 and 63,249.40

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Solution

The fourth proportional to 109,905.40, 164,858.10 and 63,249.40 is: 94,874.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,905.40 : 164,858.10 = 63,249.40 : x
  2. Step 2: Convert to fraction form
    109,905.40/164,858.10 = 63,249.40/x
  3. Step 3: Cross multiply
    109,905.40x = 164,858.10 × 63,249.40
  4. Step 4: Simplify right side
    109,905.40x = 10,427,175,910.14
  5. Step 5: Solve for x
    x = 10,427,175,910.14/109,905.40
  6. Step 6: Final answer
    x = 94,874.10

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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.