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Finding the Fourth Proportional to 167,679.65, 251,274.96 and 77,749.88

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Solution

The fourth proportional to 167,679.65, 251,274.96 and 77,749.88 is: 116,511.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,679.65 : 251,274.96 = 77,749.88 : x
  2. Step 2: Convert to fraction form
    167,679.65/251,274.96 = 77,749.88/x
  3. Step 3: Cross multiply
    167,679.65x = 251,274.96 × 77,749.88
  4. Step 4: Simplify right side
    167,679.65x = 19,536,596,730.63
  5. Step 5: Solve for x
    x = 19,536,596,730.63/167,679.65
  6. Step 6: Final answer
    x = 116,511.43

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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.