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Finding the Fourth Proportional to 61,286.40, 91,927.10 and 16,912.02

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Solution

The fourth proportional to 61,286.40, 91,927.10 and 16,912.02 is: 25,367.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,286.40 : 91,927.10 = 16,912.02 : x
  2. Step 2: Convert to fraction form
    61,286.40/91,927.10 = 16,912.02/x
  3. Step 3: Cross multiply
    61,286.40x = 91,927.10 × 16,912.02
  4. Step 4: Simplify right side
    61,286.40x = 1,554,672,953.74
  5. Step 5: Solve for x
    x = 1,554,672,953.74/61,286.40
  6. Step 6: Final answer
    x = 25,367.34

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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.