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Finding the Fourth Proportional to 119,658.43, 165,127.79 and 65,943.51

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Solution

The fourth proportional to 119,658.43, 165,127.79 and 65,943.51 is: 91,001.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,658.43 : 165,127.79 = 65,943.51 : x
  2. Step 2: Convert to fraction form
    119,658.43/165,127.79 = 65,943.51/x
  3. Step 3: Cross multiply
    119,658.43x = 165,127.79 × 65,943.51
  4. Step 4: Simplify right side
    119,658.43x = 10,889,105,616.77
  5. Step 5: Solve for x
    x = 10,889,105,616.77/119,658.43
  6. Step 6: Final answer
    x = 91,001.57

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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.