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Finding the Fourth Proportional to 81,696.60, 122,544.90 and 50,592.60

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Solution

The fourth proportional to 81,696.60, 122,544.90 and 50,592.60 is: 75,888.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,696.60 : 122,544.90 = 50,592.60 : x
  2. Step 2: Convert to fraction form
    81,696.60/122,544.90 = 50,592.60/x
  3. Step 3: Cross multiply
    81,696.60x = 122,544.90 × 50,592.60
  4. Step 4: Simplify right side
    81,696.60x = 6,199,865,107.74
  5. Step 5: Solve for x
    x = 6,199,865,107.74/81,696.60
  6. Step 6: Final answer
    x = 75,888.90

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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.