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Finding the Fourth Proportional to 108,992.20, 163,925.70 and 97,619.80

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Solution

The fourth proportional to 108,992.20, 163,925.70 and 97,619.80 is: 146,821.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,992.20 : 163,925.70 = 97,619.80 : x
  2. Step 2: Convert to fraction form
    108,992.20/163,925.70 = 97,619.80/x
  3. Step 3: Cross multiply
    108,992.20x = 163,925.70 × 97,619.80
  4. Step 4: Simplify right side
    108,992.20x = 16,002,394,048.86
  5. Step 5: Solve for x
    x = 16,002,394,048.86/108,992.20
  6. Step 6: Final answer
    x = 146,821.46

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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.