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Finding the Fourth Proportional to 74,679.80, 111,835.26 and 55,658.83

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Solution

The fourth proportional to 74,679.80, 111,835.26 and 55,658.83 is: 83,350.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,679.80 : 111,835.26 = 55,658.83 : x
  2. Step 2: Convert to fraction form
    74,679.80/111,835.26 = 55,658.83/x
  3. Step 3: Cross multiply
    74,679.80x = 111,835.26 × 55,658.83
  4. Step 4: Simplify right side
    74,679.80x = 6,224,619,165.17
  5. Step 5: Solve for x
    x = 6,224,619,165.17/74,679.80
  6. Step 6: Final answer
    x = 83,350.77

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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.