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Finding the Fourth Proportional to 75,105.78, 103,638.94 and 44,885.09

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Solution

The fourth proportional to 75,105.78, 103,638.94 and 44,885.09 is: 61,937.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,105.78 : 103,638.94 = 44,885.09 : x
  2. Step 2: Convert to fraction form
    75,105.78/103,638.94 = 44,885.09/x
  3. Step 3: Cross multiply
    75,105.78x = 103,638.94 × 44,885.09
  4. Step 4: Simplify right side
    75,105.78x = 4,651,843,149.40
  5. Step 5: Solve for x
    x = 4,651,843,149.40/75,105.78
  6. Step 6: Final answer
    x = 61,937.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.