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Finding the Fourth Proportional to 52,991.70, 73,129.90 and 29,118.98

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Solution

The fourth proportional to 52,991.70, 73,129.90 and 29,118.98 is: 40,184.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,991.70 : 73,129.90 = 29,118.98 : x
  2. Step 2: Convert to fraction form
    52,991.70/73,129.90 = 29,118.98/x
  3. Step 3: Cross multiply
    52,991.70x = 73,129.90 × 29,118.98
  4. Step 4: Simplify right side
    52,991.70x = 2,129,468,095.50
  5. Step 5: Solve for x
    x = 2,129,468,095.50/52,991.70
  6. Step 6: Final answer
    x = 40,184.94

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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.