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Finding the Fourth Proportional to 71,262.73, 106,897.53 and 18,672.26

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Solution

The fourth proportional to 71,262.73, 106,897.53 and 18,672.26 is: 28,009.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,262.73 : 106,897.53 = 18,672.26 : x
  2. Step 2: Convert to fraction form
    71,262.73/106,897.53 = 18,672.26/x
  3. Step 3: Cross multiply
    71,262.73x = 106,897.53 × 18,672.26
  4. Step 4: Simplify right side
    71,262.73x = 1,996,018,473.52
  5. Step 5: Solve for x
    x = 1,996,018,473.52/71,262.73
  6. Step 6: Final answer
    x = 28,009.29

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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.