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Finding the Fourth Proportional to 118,849.74, 164,011.68 and 65,134.62

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Solution

The fourth proportional to 118,849.74, 164,011.68 and 65,134.62 is: 89,885.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,849.74 : 164,011.68 = 65,134.62 : x
  2. Step 2: Convert to fraction form
    118,849.74/164,011.68 = 65,134.62/x
  3. Step 3: Cross multiply
    118,849.74x = 164,011.68 × 65,134.62
  4. Step 4: Simplify right side
    118,849.74x = 10,682,838,452.36
  5. Step 5: Solve for x
    x = 10,682,838,452.36/118,849.74
  6. Step 6: Final answer
    x = 89,885.25

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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.