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Finding the Fourth Proportional to 48,699.60, 73,049.40 and 31,203.60

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Solution

The fourth proportional to 48,699.60, 73,049.40 and 31,203.60 is: 46,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,699.60 : 73,049.40 = 31,203.60 : x
  2. Step 2: Convert to fraction form
    48,699.60/73,049.40 = 31,203.60/x
  3. Step 3: Cross multiply
    48,699.60x = 73,049.40 × 31,203.60
  4. Step 4: Simplify right side
    48,699.60x = 2,279,404,257.84
  5. Step 5: Solve for x
    x = 2,279,404,257.84/48,699.60
  6. Step 6: Final answer
    x = 46,805.40

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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.