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Finding the Fourth Proportional to 52,990.70, 73,128.52 and 29,117.98

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Solution

The fourth proportional to 52,990.70, 73,128.52 and 29,117.98 is: 40,183.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,990.70 : 73,128.52 = 29,117.98 : x
  2. Step 2: Convert to fraction form
    52,990.70/73,128.52 = 29,117.98/x
  3. Step 3: Cross multiply
    52,990.70x = 73,128.52 × 29,117.98
  4. Step 4: Simplify right side
    52,990.70x = 2,129,354,782.79
  5. Step 5: Solve for x
    x = 2,129,354,782.79/52,990.70
  6. Step 6: Final answer
    x = 40,183.56

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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.