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Finding the Fourth Proportional to 70,640.74, 106,021.86 and 41,017.42

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Solution

The fourth proportional to 70,640.74, 106,021.86 and 41,017.42 is: 61,561.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,640.74 : 106,021.86 = 41,017.42 : x
  2. Step 2: Convert to fraction form
    70,640.74/106,021.86 = 41,017.42/x
  3. Step 3: Cross multiply
    70,640.74x = 106,021.86 × 41,017.42
  4. Step 4: Simplify right side
    70,640.74x = 4,348,743,160.80
  5. Step 5: Solve for x
    x = 4,348,743,160.80/70,640.74
  6. Step 6: Final answer
    x = 61,561.40

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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.