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Finding the Fourth Proportional to 52,073.99, 78,094.81 and 18,789.72

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Solution

The fourth proportional to 52,073.99, 78,094.81 and 18,789.72 is: 28,178.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,073.99 : 78,094.81 = 18,789.72 : x
  2. Step 2: Convert to fraction form
    52,073.99/78,094.81 = 18,789.72/x
  3. Step 3: Cross multiply
    52,073.99x = 78,094.81 × 18,789.72
  4. Step 4: Simplify right side
    52,073.99x = 1,467,379,613.35
  5. Step 5: Solve for x
    x = 1,467,379,613.35/52,073.99
  6. Step 6: Final answer
    x = 28,178.74

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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.