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Finding the Fourth Proportional to 119,258.88, 164,581.20 and 65,545.80

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Solution

The fourth proportional to 119,258.88, 164,581.20 and 65,545.80 is: 90,455.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,258.88 : 164,581.20 = 65,545.80 : x
  2. Step 2: Convert to fraction form
    119,258.88/164,581.20 = 65,545.80/x
  3. Step 3: Cross multiply
    119,258.88x = 164,581.20 × 65,545.80
  4. Step 4: Simplify right side
    119,258.88x = 10,787,606,418.96
  5. Step 5: Solve for x
    x = 10,787,606,418.96/119,258.88
  6. Step 6: Final answer
    x = 90,455.37

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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.