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Finding the Fourth Proportional to 52,670.60, 78,877.90 and 27,992.20

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Solution

The fourth proportional to 52,670.60, 78,877.90 and 27,992.20 is: 41,920.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,670.60 : 78,877.90 = 27,992.20 : x
  2. Step 2: Convert to fraction form
    52,670.60/78,877.90 = 27,992.20/x
  3. Step 3: Cross multiply
    52,670.60x = 78,877.90 × 27,992.20
  4. Step 4: Simplify right side
    52,670.60x = 2,207,965,952.38
  5. Step 5: Solve for x
    x = 2,207,965,952.38/52,670.60
  6. Step 6: Final answer
    x = 41,920.27

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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.