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Finding the Fourth Proportional to 108,711.20, 163,066.80 and 95,880.80

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Solution

The fourth proportional to 108,711.20, 163,066.80 and 95,880.80 is: 143,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,711.20 : 163,066.80 = 95,880.80 : x
  2. Step 2: Convert to fraction form
    108,711.20/163,066.80 = 95,880.80/x
  3. Step 3: Cross multiply
    108,711.20x = 163,066.80 × 95,880.80
  4. Step 4: Simplify right side
    108,711.20x = 15,634,975,237.44
  5. Step 5: Solve for x
    x = 15,634,975,237.44/108,711.20
  6. Step 6: Final answer
    x = 143,821.20

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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.