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Finding the Fourth Proportional to 61,889.86, 92,823.82 and 28,147.97

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Solution

The fourth proportional to 61,889.86, 92,823.82 and 28,147.97 is: 42,216.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,889.86 : 92,823.82 = 28,147.97 : x
  2. Step 2: Convert to fraction form
    61,889.86/92,823.82 = 28,147.97/x
  3. Step 3: Cross multiply
    61,889.86x = 92,823.82 × 28,147.97
  4. Step 4: Simplify right side
    61,889.86x = 2,612,802,307.99
  5. Step 5: Solve for x
    x = 2,612,802,307.99/61,889.86
  6. Step 6: Final answer
    x = 42,216.97

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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.