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Finding the Fourth Proportional to 61,784.52, 85,198.96 and 52,861.56

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Solution

The fourth proportional to 61,784.52, 85,198.96 and 52,861.56 is: 72,894.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,784.52 : 85,198.96 = 52,861.56 : x
  2. Step 2: Convert to fraction form
    61,784.52/85,198.96 = 52,861.56/x
  3. Step 3: Cross multiply
    61,784.52x = 85,198.96 × 52,861.56
  4. Step 4: Simplify right side
    61,784.52x = 4,503,749,935.98
  5. Step 5: Solve for x
    x = 4,503,749,935.98/61,784.52
  6. Step 6: Final answer
    x = 72,894.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.