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Finding the Fourth Proportional to 70,563.66, 105,789.96 and 48,309.60

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Solution

The fourth proportional to 70,563.66, 105,789.96 and 48,309.60 is: 72,426.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,563.66 : 105,789.96 = 48,309.60 : x
  2. Step 2: Convert to fraction form
    70,563.66/105,789.96 = 48,309.60/x
  3. Step 3: Cross multiply
    70,563.66x = 105,789.96 × 48,309.60
  4. Step 4: Simplify right side
    70,563.66x = 5,110,670,651.62
  5. Step 5: Solve for x
    x = 5,110,670,651.62/70,563.66
  6. Step 6: Final answer
    x = 72,426.38

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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.