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Finding the Fourth Proportional to 35,891.68, 53,862.36 and 20,923.60

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Solution

The fourth proportional to 35,891.68, 53,862.36 and 20,923.60 is: 31,399.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,891.68 : 53,862.36 = 20,923.60 : x
  2. Step 2: Convert to fraction form
    35,891.68/53,862.36 = 20,923.60/x
  3. Step 3: Cross multiply
    35,891.68x = 53,862.36 × 20,923.60
  4. Step 4: Simplify right side
    35,891.68x = 1,126,994,475.70
  5. Step 5: Solve for x
    x = 1,126,994,475.70/35,891.68
  6. Step 6: Final answer
    x = 31,399.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.