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Finding the Fourth Proportional to 132,095.20, 198,142.80 and 53,168.80

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Solution

The fourth proportional to 132,095.20, 198,142.80 and 53,168.80 is: 79,753.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,095.20 : 198,142.80 = 53,168.80 : x
  2. Step 2: Convert to fraction form
    132,095.20/198,142.80 = 53,168.80/x
  3. Step 3: Cross multiply
    132,095.20x = 198,142.80 × 53,168.80
  4. Step 4: Simplify right side
    132,095.20x = 10,535,014,904.64
  5. Step 5: Solve for x
    x = 10,535,014,904.64/132,095.20
  6. Step 6: Final answer
    x = 79,753.20

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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.