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Finding the Fourth Proportional to 73,246.80, 109,848.60 and 28,858.80

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Solution

The fourth proportional to 73,246.80, 109,848.60 and 28,858.80 is: 43,279.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,246.80 : 109,848.60 = 28,858.80 : x
  2. Step 2: Convert to fraction form
    73,246.80/109,848.60 = 28,858.80/x
  3. Step 3: Cross multiply
    73,246.80x = 109,848.60 × 28,858.80
  4. Step 4: Simplify right side
    73,246.80x = 3,170,098,777.68
  5. Step 5: Solve for x
    x = 3,170,098,777.68/73,246.80
  6. Step 6: Final answer
    x = 43,279.69

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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.