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Finding the Fourth Proportional to 21,043.98, 31,564.88 and 6,253.02

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Solution

The fourth proportional to 21,043.98, 31,564.88 and 6,253.02 is: 9,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.98 : 31,564.88 = 6,253.02 : x
  2. Step 2: Convert to fraction form
    21,043.98/31,564.88 = 6,253.02/x
  3. Step 3: Cross multiply
    21,043.98x = 31,564.88 × 6,253.02
  4. Step 4: Simplify right side
    21,043.98x = 197,375,825.94
  5. Step 5: Solve for x
    x = 197,375,825.94/21,043.98
  6. Step 6: Final answer
    x = 9,379.21

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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.