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Finding the Fourth Proportional to 61,213.68, 91,827.04 and 21,774.48

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Solution

The fourth proportional to 61,213.68, 91,827.04 and 21,774.48 is: 32,664.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,213.68 : 91,827.04 = 21,774.48 : x
  2. Step 2: Convert to fraction form
    61,213.68/91,827.04 = 21,774.48/x
  3. Step 3: Cross multiply
    61,213.68x = 91,827.04 × 21,774.48
  4. Step 4: Simplify right side
    61,213.68x = 1,999,486,045.94
  5. Step 5: Solve for x
    x = 1,999,486,045.94/61,213.68
  6. Step 6: Final answer
    x = 32,664.04

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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.