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Finding the Fourth Proportional to 70,649.62, 105,974.33 and 44,372.81

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Solution

The fourth proportional to 70,649.62, 105,974.33 and 44,372.81 is: 66,559.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,649.62 : 105,974.33 = 44,372.81 : x
  2. Step 2: Convert to fraction form
    70,649.62/105,974.33 = 44,372.81/x
  3. Step 3: Cross multiply
    70,649.62x = 105,974.33 × 44,372.81
  4. Step 4: Simplify right side
    70,649.62x = 4,702,378,853.04
  5. Step 5: Solve for x
    x = 4,702,378,853.04/70,649.62
  6. Step 6: Final answer
    x = 66,559.16

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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.