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Finding the Fourth Proportional to 115,912.60, 173,739.30 and 49,341.40

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Solution

The fourth proportional to 115,912.60, 173,739.30 and 49,341.40 is: 73,956.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,912.60 : 173,739.30 = 49,341.40 : x
  2. Step 2: Convert to fraction form
    115,912.60/173,739.30 = 49,341.40/x
  3. Step 3: Cross multiply
    115,912.60x = 173,739.30 × 49,341.40
  4. Step 4: Simplify right side
    115,912.60x = 8,572,540,297.02
  5. Step 5: Solve for x
    x = 8,572,540,297.02/115,912.60
  6. Step 6: Final answer
    x = 73,956.93

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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.