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Finding the Fourth Proportional to 74,680.60, 103,097.32 and 50,608.74

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Solution

The fourth proportional to 74,680.60, 103,097.32 and 50,608.74 is: 69,865.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,680.60 : 103,097.32 = 50,608.74 : x
  2. Step 2: Convert to fraction form
    74,680.60/103,097.32 = 50,608.74/x
  3. Step 3: Cross multiply
    74,680.60x = 103,097.32 × 50,608.74
  4. Step 4: Simplify right side
    74,680.60x = 5,217,625,462.58
  5. Step 5: Solve for x
    x = 5,217,625,462.58/74,680.60
  6. Step 6: Final answer
    x = 69,865.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.