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Finding the Fourth Proportional to 61,060.84, 91,604.32 and 18,940.01

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Solution

The fourth proportional to 61,060.84, 91,604.32 and 18,940.01 is: 28,414.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,060.84 : 91,604.32 = 18,940.01 : x
  2. Step 2: Convert to fraction form
    61,060.84/91,604.32 = 18,940.01/x
  3. Step 3: Cross multiply
    61,060.84x = 91,604.32 × 18,940.01
  4. Step 4: Simplify right side
    61,060.84x = 1,734,986,231.47
  5. Step 5: Solve for x
    x = 1,734,986,231.47/61,060.84
  6. Step 6: Final answer
    x = 28,414.06

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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.