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Finding the Fourth Proportional to 66,393.17, 99,609.20 and 19,647.26

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Solution

The fourth proportional to 66,393.17, 99,609.20 and 19,647.26 is: 29,476.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,393.17 : 99,609.20 = 19,647.26 : x
  2. Step 2: Convert to fraction form
    66,393.17/99,609.20 = 19,647.26/x
  3. Step 3: Cross multiply
    66,393.17x = 99,609.20 × 19,647.26
  4. Step 4: Simplify right side
    66,393.17x = 1,957,047,752.56
  5. Step 5: Solve for x
    x = 1,957,047,752.56/66,393.17
  6. Step 6: Final answer
    x = 29,476.64

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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.