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Finding the Fourth Proportional to 48,739.80, 72,947.70 and 35,374.80

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Solution

The fourth proportional to 48,739.80, 72,947.70 and 35,374.80 is: 52,944.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,739.80 : 72,947.70 = 35,374.80 : x
  2. Step 2: Convert to fraction form
    48,739.80/72,947.70 = 35,374.80/x
  3. Step 3: Cross multiply
    48,739.80x = 72,947.70 × 35,374.80
  4. Step 4: Simplify right side
    48,739.80x = 2,580,510,297.96
  5. Step 5: Solve for x
    x = 2,580,510,297.96/48,739.80
  6. Step 6: Final answer
    x = 52,944.62

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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.