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Finding the Fourth Proportional to 72,296.70, 99,773.26 and 45,429.26

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Solution

The fourth proportional to 72,296.70, 99,773.26 and 45,429.26 is: 62,694.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,296.70 : 99,773.26 = 45,429.26 : x
  2. Step 2: Convert to fraction form
    72,296.70/99,773.26 = 45,429.26/x
  3. Step 3: Cross multiply
    72,296.70x = 99,773.26 × 45,429.26
  4. Step 4: Simplify right side
    72,296.70x = 4,532,625,369.59
  5. Step 5: Solve for x
    x = 4,532,625,369.59/72,296.70
  6. Step 6: Final answer
    x = 62,694.78

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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.