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Finding the Fourth Proportional to 74,833.91, 103,288.52 and 43,021.29

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Solution

The fourth proportional to 74,833.91, 103,288.52 and 43,021.29 is: 59,379.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,833.91 : 103,288.52 = 43,021.29 : x
  2. Step 2: Convert to fraction form
    74,833.91/103,288.52 = 43,021.29/x
  3. Step 3: Cross multiply
    74,833.91x = 103,288.52 × 43,021.29
  4. Step 4: Simplify right side
    74,833.91x = 4,443,605,157.48
  5. Step 5: Solve for x
    x = 4,443,605,157.48/74,833.91
  6. Step 6: Final answer
    x = 59,379.57

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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.