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Finding the Fourth Proportional to 29,666.50, 40,944.35 and 16,919.71

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Solution

The fourth proportional to 29,666.50, 40,944.35 and 16,919.71 is: 23,351.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,666.50 : 40,944.35 = 16,919.71 : x
  2. Step 2: Convert to fraction form
    29,666.50/40,944.35 = 16,919.71/x
  3. Step 3: Cross multiply
    29,666.50x = 40,944.35 × 16,919.71
  4. Step 4: Simplify right side
    29,666.50x = 692,766,238.82
  5. Step 5: Solve for x
    x = 692,766,238.82/29,666.50
  6. Step 6: Final answer
    x = 23,351.81

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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.