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Finding the Fourth Proportional to 119,699.64, 165,195.38 and 65,995.16

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Solution

The fourth proportional to 119,699.64, 165,195.38 and 65,995.16 is: 91,078.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,699.64 : 165,195.38 = 65,995.16 : x
  2. Step 2: Convert to fraction form
    119,699.64/165,195.38 = 65,995.16/x
  3. Step 3: Cross multiply
    119,699.64x = 165,195.38 × 65,995.16
  4. Step 4: Simplify right side
    119,699.64x = 10,902,094,873.37
  5. Step 5: Solve for x
    x = 10,902,094,873.37/119,699.64
  6. Step 6: Final answer
    x = 91,078.76

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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.