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Finding the Fourth Proportional to 48,679.78, 73,155.99 and 28,961.38

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Solution

The fourth proportional to 48,679.78, 73,155.99 and 28,961.38 is: 43,523.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,679.78 : 73,155.99 = 28,961.38 : x
  2. Step 2: Convert to fraction form
    48,679.78/73,155.99 = 28,961.38/x
  3. Step 3: Cross multiply
    48,679.78x = 73,155.99 × 28,961.38
  4. Step 4: Simplify right side
    48,679.78x = 2,118,698,425.67
  5. Step 5: Solve for x
    x = 2,118,698,425.67/48,679.78
  6. Step 6: Final answer
    x = 43,523.17

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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.