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Finding the Fourth Proportional to 74,980.82, 103,463.39 and 48,159.69

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Solution

The fourth proportional to 74,980.82, 103,463.39 and 48,159.69 is: 66,453.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,980.82 : 103,463.39 = 48,159.69 : x
  2. Step 2: Convert to fraction form
    74,980.82/103,463.39 = 48,159.69/x
  3. Step 3: Cross multiply
    74,980.82x = 103,463.39 × 48,159.69
  4. Step 4: Simplify right side
    74,980.82x = 4,982,764,909.15
  5. Step 5: Solve for x
    x = 4,982,764,909.15/74,980.82
  6. Step 6: Final answer
    x = 66,453.86

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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.