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Finding the Fourth Proportional to 132,172.74, 198,455.93 and 53,440.74

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Solution

The fourth proportional to 132,172.74, 198,455.93 and 53,440.74 is: 80,240.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,172.74 : 198,455.93 = 53,440.74 : x
  2. Step 2: Convert to fraction form
    132,172.74/198,455.93 = 53,440.74/x
  3. Step 3: Cross multiply
    132,172.74x = 198,455.93 × 53,440.74
  4. Step 4: Simplify right side
    132,172.74x = 10,605,631,756.59
  5. Step 5: Solve for x
    x = 10,605,631,756.59/132,172.74
  6. Step 6: Final answer
    x = 80,240.69

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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.