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Finding the Fourth Proportional to 61,861.98, 92,747.48 and 19,717.80

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Solution

The fourth proportional to 61,861.98, 92,747.48 and 19,717.80 is: 29,562.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,861.98 : 92,747.48 = 19,717.80 : x
  2. Step 2: Convert to fraction form
    61,861.98/92,747.48 = 19,717.80/x
  3. Step 3: Cross multiply
    61,861.98x = 92,747.48 × 19,717.80
  4. Step 4: Simplify right side
    61,861.98x = 1,828,776,261.14
  5. Step 5: Solve for x
    x = 1,828,776,261.14/61,861.98
  6. Step 6: Final answer
    x = 29,562.20

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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.