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Finding the Fourth Proportional to 103,515.60, 155,309.85 and 44,369.40

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Solution

The fourth proportional to 103,515.60, 155,309.85 and 44,369.40 is: 66,569.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,515.60 : 155,309.85 = 44,369.40 : x
  2. Step 2: Convert to fraction form
    103,515.60/155,309.85 = 44,369.40/x
  3. Step 3: Cross multiply
    103,515.60x = 155,309.85 × 44,369.40
  4. Step 4: Simplify right side
    103,515.60x = 6,891,004,858.59
  5. Step 5: Solve for x
    x = 6,891,004,858.59/103,515.60
  6. Step 6: Final answer
    x = 66,569.72

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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.