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Finding the Fourth Proportional to 66,644.40, 99,983.91 and 19,897.26

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Solution

The fourth proportional to 66,644.40, 99,983.91 and 19,897.26 is: 29,851.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,644.40 : 99,983.91 = 19,897.26 : x
  2. Step 2: Convert to fraction form
    66,644.40/99,983.91 = 19,897.26/x
  3. Step 3: Cross multiply
    66,644.40x = 99,983.91 × 19,897.26
  4. Step 4: Simplify right side
    66,644.40x = 1,989,405,853.09
  5. Step 5: Solve for x
    x = 1,989,405,853.09/66,644.40
  6. Step 6: Final answer
    x = 29,851.06

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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.