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Finding the Fourth Proportional to 119,605.71, 165,049.75 and 65,889.55

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Solution

The fourth proportional to 119,605.71, 165,049.75 and 65,889.55 is: 90,924.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,605.71 : 165,049.75 = 65,889.55 : x
  2. Step 2: Convert to fraction form
    119,605.71/165,049.75 = 65,889.55/x
  3. Step 3: Cross multiply
    119,605.71x = 165,049.75 × 65,889.55
  4. Step 4: Simplify right side
    119,605.71x = 10,875,054,043.79
  5. Step 5: Solve for x
    x = 10,875,054,043.79/119,605.71
  6. Step 6: Final answer
    x = 90,924.20

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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.