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Finding the Fourth Proportional to 108,910.80, 163,366.20 and 49,861.80

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Solution

The fourth proportional to 108,910.80, 163,366.20 and 49,861.80 is: 74,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,910.80 : 163,366.20 = 49,861.80 : x
  2. Step 2: Convert to fraction form
    108,910.80/163,366.20 = 49,861.80/x
  3. Step 3: Cross multiply
    108,910.80x = 163,366.20 × 49,861.80
  4. Step 4: Simplify right side
    108,910.80x = 8,145,732,791.16
  5. Step 5: Solve for x
    x = 8,145,732,791.16/108,910.80
  6. Step 6: Final answer
    x = 74,792.70

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1.5x scale

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.