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Finding the Fourth Proportional to 52,603.20, 78,776.28 and 27,664.20

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Solution

The fourth proportional to 52,603.20, 78,776.28 and 27,664.20 is: 41,428.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,603.20 : 78,776.28 = 27,664.20 : x
  2. Step 2: Convert to fraction form
    52,603.20/78,776.28 = 27,664.20/x
  3. Step 3: Cross multiply
    52,603.20x = 78,776.28 × 27,664.20
  4. Step 4: Simplify right side
    52,603.20x = 2,179,282,765.18
  5. Step 5: Solve for x
    x = 2,179,282,765.18/52,603.20
  6. Step 6: Final answer
    x = 41,428.71

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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.