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Finding the Fourth Proportional to 53,791.72, 74,230.72 and 29,917.92

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Solution

The fourth proportional to 53,791.72, 74,230.72 and 29,917.92 is: 41,285.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,791.72 : 74,230.72 = 29,917.92 : x
  2. Step 2: Convert to fraction form
    53,791.72/74,230.72 = 29,917.92/x
  3. Step 3: Cross multiply
    53,791.72x = 74,230.72 × 29,917.92
  4. Step 4: Simplify right side
    53,791.72x = 2,220,828,742.50
  5. Step 5: Solve for x
    x = 2,220,828,742.50/53,791.72
  6. Step 6: Final answer
    x = 41,285.70

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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.