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Finding the Fourth Proportional to 92,603.38, 138,809.72 and 36,420.71

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Solution

The fourth proportional to 92,603.38, 138,809.72 and 36,420.71 is: 54,593.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,603.38 : 138,809.72 = 36,420.71 : x
  2. Step 2: Convert to fraction form
    92,603.38/138,809.72 = 36,420.71/x
  3. Step 3: Cross multiply
    92,603.38x = 138,809.72 × 36,420.71
  4. Step 4: Simplify right side
    92,603.38x = 5,055,548,557.30
  5. Step 5: Solve for x
    x = 5,055,548,557.30/92,603.38
  6. Step 6: Final answer
    x = 54,593.56

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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.