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Finding the Fourth Proportional to 165,861.71, 248,888.93 and 69,791.88

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Solution

The fourth proportional to 165,861.71, 248,888.93 and 69,791.88 is: 104,728.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,861.71 : 248,888.93 = 69,791.88 : x
  2. Step 2: Convert to fraction form
    165,861.71/248,888.93 = 69,791.88/x
  3. Step 3: Cross multiply
    165,861.71x = 248,888.93 × 69,791.88
  4. Step 4: Simplify right side
    165,861.71x = 17,370,425,986.93
  5. Step 5: Solve for x
    x = 17,370,425,986.93/165,861.71
  6. Step 6: Final answer
    x = 104,728.37

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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.