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Finding the Fourth Proportional to 61,902.21, 85,425.99 and 33,607.90

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Solution

The fourth proportional to 61,902.21, 85,425.99 and 33,607.90 is: 46,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,902.21 : 85,425.99 = 33,607.90 : x
  2. Step 2: Convert to fraction form
    61,902.21/85,425.99 = 33,607.90/x
  3. Step 3: Cross multiply
    61,902.21x = 85,425.99 × 33,607.90
  4. Step 4: Simplify right side
    61,902.21x = 2,870,988,129.32
  5. Step 5: Solve for x
    x = 2,870,988,129.32/61,902.21
  6. Step 6: Final answer
    x = 46,379.41

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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.