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Finding the Fourth Proportional to 108,696.20, 162,842.70 and 61,809.80

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Solution

The fourth proportional to 108,696.20, 162,842.70 and 61,809.80 is: 92,600.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,696.20 : 162,842.70 = 61,809.80 : x
  2. Step 2: Convert to fraction form
    108,696.20/162,842.70 = 61,809.80/x
  3. Step 3: Cross multiply
    108,696.20x = 162,842.70 × 61,809.80
  4. Step 4: Simplify right side
    108,696.20x = 10,065,274,718.46
  5. Step 5: Solve for x
    x = 10,065,274,718.46/108,696.20
  6. Step 6: Final answer
    x = 92,600.06

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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.