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Finding the Fourth Proportional to 35,860.50, 49,487.49 and 20,956.50

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Solution

The fourth proportional to 35,860.50, 49,487.49 and 20,956.50 is: 28,919.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,860.50 : 49,487.49 = 20,956.50 : x
  2. Step 2: Convert to fraction form
    35,860.50/49,487.49 = 20,956.50/x
  3. Step 3: Cross multiply
    35,860.50x = 49,487.49 × 20,956.50
  4. Step 4: Simplify right side
    35,860.50x = 1,037,084,584.19
  5. Step 5: Solve for x
    x = 1,037,084,584.19/35,860.50
  6. Step 6: Final answer
    x = 28,919.97

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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.