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Finding the Fourth Proportional to 61,912.17, 92,883.96 and 28,656.18

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Solution

The fourth proportional to 61,912.17, 92,883.96 and 28,656.18 is: 42,991.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,912.17 : 92,883.96 = 28,656.18 : x
  2. Step 2: Convert to fraction form
    61,912.17/92,883.96 = 28,656.18/x
  3. Step 3: Cross multiply
    61,912.17x = 92,883.96 × 28,656.18
  4. Step 4: Simplify right side
    61,912.17x = 2,661,699,476.87
  5. Step 5: Solve for x
    x = 2,661,699,476.87/61,912.17
  6. Step 6: Final answer
    x = 42,991.54

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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.