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Finding the Fourth Proportional to 35,990.46, 53,986.02 and 13,798.56

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Solution

The fourth proportional to 35,990.46, 53,986.02 and 13,798.56 is: 20,697.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,990.46 : 53,986.02 = 13,798.56 : x
  2. Step 2: Convert to fraction form
    35,990.46/53,986.02 = 13,798.56/x
  3. Step 3: Cross multiply
    35,990.46x = 53,986.02 × 13,798.56
  4. Step 4: Simplify right side
    35,990.46x = 744,929,336.13
  5. Step 5: Solve for x
    x = 744,929,336.13/35,990.46
  6. Step 6: Final answer
    x = 20,697.97

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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.