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Finding the Fourth Proportional to 48,506.20, 72,720.90 and 26,618.20

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Solution

The fourth proportional to 48,506.20, 72,720.90 and 26,618.20 is: 39,906.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,506.20 : 72,720.90 = 26,618.20 : x
  2. Step 2: Convert to fraction form
    48,506.20/72,720.90 = 26,618.20/x
  3. Step 3: Cross multiply
    48,506.20x = 72,720.90 × 26,618.20
  4. Step 4: Simplify right side
    48,506.20x = 1,935,699,460.38
  5. Step 5: Solve for x
    x = 1,935,699,460.38/48,506.20
  6. Step 6: Final answer
    x = 39,906.23

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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.