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Finding the Fourth Proportional to 11,922.64, 17,871.80 and 5,347.06

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Solution

The fourth proportional to 11,922.64, 17,871.80 and 5,347.06 is: 8,015.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,922.64 : 17,871.80 = 5,347.06 : x
  2. Step 2: Convert to fraction form
    11,922.64/17,871.80 = 5,347.06/x
  3. Step 3: Cross multiply
    11,922.64x = 17,871.80 × 5,347.06
  4. Step 4: Simplify right side
    11,922.64x = 95,561,586.91
  5. Step 5: Solve for x
    x = 95,561,586.91/11,922.64
  6. Step 6: Final answer
    x = 8,015.14

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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.