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Finding the Fourth Proportional to 119,846.66, 165,388.97 and 66,131.71

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Solution

The fourth proportional to 119,846.66, 165,388.97 and 66,131.71 is: 91,262.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,846.66 : 165,388.97 = 66,131.71 : x
  2. Step 2: Convert to fraction form
    119,846.66/165,388.97 = 66,131.71/x
  3. Step 3: Cross multiply
    119,846.66x = 165,388.97 × 66,131.71
  4. Step 4: Simplify right side
    119,846.66x = 10,937,455,153.10
  5. Step 5: Solve for x
    x = 10,937,455,153.10/119,846.66
  6. Step 6: Final answer
    x = 91,262.08

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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.