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Finding the Fourth Proportional to 35,615.28, 53,375.74 and 18,939.41

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Solution

The fourth proportional to 35,615.28, 53,375.74 and 18,939.41 is: 28,384.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,615.28 : 53,375.74 = 18,939.41 : x
  2. Step 2: Convert to fraction form
    35,615.28/53,375.74 = 18,939.41/x
  3. Step 3: Cross multiply
    35,615.28x = 53,375.74 × 18,939.41
  4. Step 4: Simplify right side
    35,615.28x = 1,010,905,023.91
  5. Step 5: Solve for x
    x = 1,010,905,023.91/35,615.28
  6. Step 6: Final answer
    x = 28,384.03

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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.