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Finding the Fourth Proportional to 75,947.60, 104,946.60 and 65,843.60

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Solution

The fourth proportional to 75,947.60, 104,946.60 and 65,843.60 is: 90,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,947.60 : 104,946.60 = 65,843.60 : x
  2. Step 2: Convert to fraction form
    75,947.60/104,946.60 = 65,843.60/x
  3. Step 3: Cross multiply
    75,947.60x = 104,946.60 × 65,843.60
  4. Step 4: Simplify right side
    75,947.60x = 6,910,061,951.76
  5. Step 5: Solve for x
    x = 6,910,061,951.76/75,947.60
  6. Step 6: Final answer
    x = 90,984.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.