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Finding the Fourth Proportional to 86,503.28, 119,197.37 and 63,806.37

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Solution

The fourth proportional to 86,503.28, 119,197.37 and 63,806.37 is: 87,922.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,503.28 : 119,197.37 = 63,806.37 : x
  2. Step 2: Convert to fraction form
    86,503.28/119,197.37 = 63,806.37/x
  3. Step 3: Cross multiply
    86,503.28x = 119,197.37 × 63,806.37
  4. Step 4: Simplify right side
    86,503.28x = 7,605,551,205.77
  5. Step 5: Solve for x
    x = 7,605,551,205.77/86,503.28
  6. Step 6: Final answer
    x = 87,922.12

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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.