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Finding the Fourth Proportional to 30,281.82, 41,753.16 and 20,726.31

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Solution

The fourth proportional to 30,281.82, 41,753.16 and 20,726.31 is: 28,577.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.82 : 41,753.16 = 20,726.31 : x
  2. Step 2: Convert to fraction form
    30,281.82/41,753.16 = 20,726.31/x
  3. Step 3: Cross multiply
    30,281.82x = 41,753.16 × 20,726.31
  4. Step 4: Simplify right side
    30,281.82x = 865,388,937.64
  5. Step 5: Solve for x
    x = 865,388,937.64/30,281.82
  6. Step 6: Final answer
    x = 28,577.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.