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Finding the Fourth Proportional to 117,489.88, 176,215.38 and 38,604.79

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Solution

The fourth proportional to 117,489.88, 176,215.38 and 38,604.79 is: 57,900.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,489.88 : 176,215.38 = 38,604.79 : x
  2. Step 2: Convert to fraction form
    117,489.88/176,215.38 = 38,604.79/x
  3. Step 3: Cross multiply
    117,489.88x = 176,215.38 × 38,604.79
  4. Step 4: Simplify right side
    117,489.88x = 6,802,757,739.67
  5. Step 5: Solve for x
    x = 6,802,757,739.67/117,489.88
  6. Step 6: Final answer
    x = 57,900.80

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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.