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Finding the Fourth Proportional to 119,969.62, 165,558.16 and 65,522.53

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Solution

The fourth proportional to 119,969.62, 165,558.16 and 65,522.53 is: 90,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,969.62 : 165,558.16 = 65,522.53 : x
  2. Step 2: Convert to fraction form
    119,969.62/165,558.16 = 65,522.53/x
  3. Step 3: Cross multiply
    119,969.62x = 165,558.16 × 65,522.53
  4. Step 4: Simplify right side
    119,969.62x = 10,847,789,794.20
  5. Step 5: Solve for x
    x = 10,847,789,794.20/119,969.62
  6. Step 6: Final answer
    x = 90,421.14

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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.