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Finding the Fourth Proportional to 132,516, 198,837.79 and 65,961.95

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Solution

The fourth proportional to 132,516, 198,837.79 and 65,961.95 is: 98,974.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,516 : 198,837.79 = 65,961.95 : x
  2. Step 2: Convert to fraction form
    132,516/198,837.79 = 65,961.95/x
  3. Step 3: Cross multiply
    132,516x = 198,837.79 × 65,961.95
  4. Step 4: Simplify right side
    132,516x = 13,115,727,203.00
  5. Step 5: Solve for x
    x = 13,115,727,203.00/132,516
  6. Step 6: Final answer
    x = 98,974.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.