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Finding the Fourth Proportional to 73,318.80, 109,783.80 and 57,766.80

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Solution

The fourth proportional to 73,318.80, 109,783.80 and 57,766.80 is: 86,497.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,318.80 : 109,783.80 = 57,766.80 : x
  2. Step 2: Convert to fraction form
    73,318.80/109,783.80 = 57,766.80/x
  3. Step 3: Cross multiply
    73,318.80x = 109,783.80 × 57,766.80
  4. Step 4: Simplify right side
    73,318.80x = 6,341,858,817.84
  5. Step 5: Solve for x
    x = 6,341,858,817.84/73,318.80
  6. Step 6: Final answer
    x = 86,497.04

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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.