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Finding the Fourth Proportional to 422,479.81, 633,720.17 and 106,936.71

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Solution

The fourth proportional to 422,479.81, 633,720.17 and 106,936.71 is: 160,405.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,479.81 : 633,720.17 = 106,936.71 : x
  2. Step 2: Convert to fraction form
    422,479.81/633,720.17 = 106,936.71/x
  3. Step 3: Cross multiply
    422,479.81x = 633,720.17 × 106,936.71
  4. Step 4: Simplify right side
    422,479.81x = 67,767,953,278.35
  5. Step 5: Solve for x
    x = 67,767,953,278.35/422,479.81
  6. Step 6: Final answer
    x = 160,405.19

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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.