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Finding the Fourth Proportional to 117,967.40, 176,975.67 and 39,087.80

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Solution

The fourth proportional to 117,967.40, 176,975.67 and 39,087.80 is: 58,639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,967.40 : 176,975.67 = 39,087.80 : x
  2. Step 2: Convert to fraction form
    117,967.40/176,975.67 = 39,087.80/x
  3. Step 3: Cross multiply
    117,967.40x = 176,975.67 × 39,087.80
  4. Step 4: Simplify right side
    117,967.40x = 6,917,589,593.83
  5. Step 5: Solve for x
    x = 6,917,589,593.83/117,967.40
  6. Step 6: Final answer
    x = 58,639.84

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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.