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Finding the Fourth Proportional to 56,469.92, 77,896.96 and 52,465.28

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Solution

The fourth proportional to 56,469.92, 77,896.96 and 52,465.28 is: 72,372.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,469.92 : 77,896.96 = 52,465.28 : x
  2. Step 2: Convert to fraction form
    56,469.92/77,896.96 = 52,465.28/x
  3. Step 3: Cross multiply
    56,469.92x = 77,896.96 × 52,465.28
  4. Step 4: Simplify right side
    56,469.92x = 4,086,885,817.55
  5. Step 5: Solve for x
    x = 4,086,885,817.55/56,469.92
  6. Step 6: Final answer
    x = 72,372.79

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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.