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Finding the Fourth Proportional to 132,635, 198,958 and 39,140.76

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Solution

The fourth proportional to 132,635, 198,958 and 39,140.76 is: 58,712.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,635 : 198,958 = 39,140.76 : x
  2. Step 2: Convert to fraction form
    132,635/198,958 = 39,140.76/x
  3. Step 3: Cross multiply
    132,635x = 198,958 × 39,140.76
  4. Step 4: Simplify right side
    132,635x = 7,787,367,328.08
  5. Step 5: Solve for x
    x = 7,787,367,328.08/132,635
  6. Step 6: Final answer
    x = 58,712.76

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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.