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Finding the Fourth Proportional to 117,959.69, 162,786.23 and 64,244.66

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Solution

The fourth proportional to 117,959.69, 162,786.23 and 64,244.66 is: 88,658.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,959.69 : 162,786.23 = 64,244.66 : x
  2. Step 2: Convert to fraction form
    117,959.69/162,786.23 = 64,244.66/x
  3. Step 3: Cross multiply
    117,959.69x = 162,786.23 × 64,244.66
  4. Step 4: Simplify right side
    117,959.69x = 10,458,145,999.03
  5. Step 5: Solve for x
    x = 10,458,145,999.03/117,959.69
  6. Step 6: Final answer
    x = 88,658.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.