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Finding the Fourth Proportional to 61,858.62, 92,777.40 and 20,305.62

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Solution

The fourth proportional to 61,858.62, 92,777.40 and 20,305.62 is: 30,454.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,858.62 : 92,777.40 = 20,305.62 : x
  2. Step 2: Convert to fraction form
    61,858.62/92,777.40 = 20,305.62/x
  3. Step 3: Cross multiply
    61,858.62x = 92,777.40 × 20,305.62
  4. Step 4: Simplify right side
    61,858.62x = 1,883,902,628.99
  5. Step 5: Solve for x
    x = 1,883,902,628.99/61,858.62
  6. Step 6: Final answer
    x = 30,454.97

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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.