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Finding the Fourth Proportional to 115,900.80, 173,710.80 and 49,200.90

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Solution

The fourth proportional to 115,900.80, 173,710.80 and 49,200.90 is: 73,741.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,900.80 : 173,710.80 = 49,200.90 : x
  2. Step 2: Convert to fraction form
    115,900.80/173,710.80 = 49,200.90/x
  3. Step 3: Cross multiply
    115,900.80x = 173,710.80 × 49,200.90
  4. Step 4: Simplify right side
    115,900.80x = 8,546,727,699.72
  5. Step 5: Solve for x
    x = 8,546,727,699.72/115,900.80
  6. Step 6: Final answer
    x = 73,741.75

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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.