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Finding the Fourth Proportional to 52,290.99, 78,445.89 and 19,057.70

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Solution

The fourth proportional to 52,290.99, 78,445.89 and 19,057.70 is: 28,589.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,290.99 : 78,445.89 = 19,057.70 : x
  2. Step 2: Convert to fraction form
    52,290.99/78,445.89 = 19,057.70/x
  3. Step 3: Cross multiply
    52,290.99x = 78,445.89 × 19,057.70
  4. Step 4: Simplify right side
    52,290.99x = 1,494,997,845.62
  5. Step 5: Solve for x
    x = 1,494,997,845.62/52,290.99
  6. Step 6: Final answer
    x = 28,589.97

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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.