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Finding the Fourth Proportional to 49,830.60, 74,745.90 and 36,708.60

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Solution

The fourth proportional to 49,830.60, 74,745.90 and 36,708.60 is: 55,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,830.60 : 74,745.90 = 36,708.60 : x
  2. Step 2: Convert to fraction form
    49,830.60/74,745.90 = 36,708.60/x
  3. Step 3: Cross multiply
    49,830.60x = 74,745.90 × 36,708.60
  4. Step 4: Simplify right side
    49,830.60x = 2,743,817,344.74
  5. Step 5: Solve for x
    x = 2,743,817,344.74/49,830.60
  6. Step 6: Final answer
    x = 55,062.90

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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.