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Finding the Fourth Proportional to 52,786.78, 79,187.89 and 15,341.98

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Solution

The fourth proportional to 52,786.78, 79,187.89 and 15,341.98 is: 23,015.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,786.78 : 79,187.89 = 15,341.98 : x
  2. Step 2: Convert to fraction form
    52,786.78/79,187.89 = 15,341.98/x
  3. Step 3: Cross multiply
    52,786.78x = 79,187.89 × 15,341.98
  4. Step 4: Simplify right side
    52,786.78x = 1,214,898,647.86
  5. Step 5: Solve for x
    x = 1,214,898,647.86/52,786.78
  6. Step 6: Final answer
    x = 23,015.21

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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.