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Finding the Fourth Proportional to 132,647.81, 198,846.61 and 66,024.95

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Solution

The fourth proportional to 132,647.81, 198,846.61 and 66,024.95 is: 98,975.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,647.81 : 198,846.61 = 66,024.95 : x
  2. Step 2: Convert to fraction form
    132,647.81/198,846.61 = 66,024.95/x
  3. Step 3: Cross multiply
    132,647.81x = 198,846.61 × 66,024.95
  4. Step 4: Simplify right side
    132,647.81x = 13,128,836,323.62
  5. Step 5: Solve for x
    x = 13,128,836,323.62/132,647.81
  6. Step 6: Final answer
    x = 98,975.15

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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.