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Finding the Fourth Proportional to 90,866.80, 136,300.20 and 62,873.20

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Solution

The fourth proportional to 90,866.80, 136,300.20 and 62,873.20 is: 94,309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,866.80 : 136,300.20 = 62,873.20 : x
  2. Step 2: Convert to fraction form
    90,866.80/136,300.20 = 62,873.20/x
  3. Step 3: Cross multiply
    90,866.80x = 136,300.20 × 62,873.20
  4. Step 4: Simplify right side
    90,866.80x = 8,569,629,734.64
  5. Step 5: Solve for x
    x = 8,569,629,734.64/90,866.80
  6. Step 6: Final answer
    x = 94,309.80

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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.