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Finding the Fourth Proportional to 61,398.86, 91,999.94 and 55,493.96

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Solution

The fourth proportional to 61,398.86, 91,999.94 and 55,493.96 is: 83,152.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,398.86 : 91,999.94 = 55,493.96 : x
  2. Step 2: Convert to fraction form
    61,398.86/91,999.94 = 55,493.96/x
  3. Step 3: Cross multiply
    61,398.86x = 91,999.94 × 55,493.96
  4. Step 4: Simplify right side
    61,398.86x = 5,105,440,252.89
  5. Step 5: Solve for x
    x = 5,105,440,252.89/61,398.86
  6. Step 6: Final answer
    x = 83,152.04

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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.