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Finding the Fourth Proportional to 70,605.11, 105,931.97 and 44,279.03

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Solution

The fourth proportional to 70,605.11, 105,931.97 and 44,279.03 is: 66,433.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,605.11 : 105,931.97 = 44,279.03 : x
  2. Step 2: Convert to fraction form
    70,605.11/105,931.97 = 44,279.03/x
  3. Step 3: Cross multiply
    70,605.11x = 105,931.97 × 44,279.03
  4. Step 4: Simplify right side
    70,605.11x = 4,690,564,877.59
  5. Step 5: Solve for x
    x = 4,690,564,877.59/70,605.11
  6. Step 6: Final answer
    x = 66,433.79

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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.