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Finding the Fourth Proportional to 115,923.81, 173,768.08 and 65,900.55

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Solution

The fourth proportional to 115,923.81, 173,768.08 and 65,900.55 is: 98,783.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,923.81 : 173,768.08 = 65,900.55 : x
  2. Step 2: Convert to fraction form
    115,923.81/173,768.08 = 65,900.55/x
  3. Step 3: Cross multiply
    115,923.81x = 173,768.08 × 65,900.55
  4. Step 4: Simplify right side
    115,923.81x = 11,451,412,044.44
  5. Step 5: Solve for x
    x = 11,451,412,044.44/115,923.81
  6. Step 6: Final answer
    x = 98,783.95

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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.