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Finding the Fourth Proportional to 119,782.40, 165,307.91 and 69,481.40

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Solution

The fourth proportional to 119,782.40, 165,307.91 and 69,481.40 is: 95,889.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,782.40 : 165,307.91 = 69,481.40 : x
  2. Step 2: Convert to fraction form
    119,782.40/165,307.91 = 69,481.40/x
  3. Step 3: Cross multiply
    119,782.40x = 165,307.91 × 69,481.40
  4. Step 4: Simplify right side
    119,782.40x = 11,485,823,843.93
  5. Step 5: Solve for x
    x = 11,485,823,843.93/119,782.40
  6. Step 6: Final answer
    x = 95,889.08

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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.