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Finding the Fourth Proportional to 113,980.95, 171,020.63 and 61,379.96

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Solution

The fourth proportional to 113,980.95, 171,020.63 and 61,379.96 is: 92,096.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,980.95 : 171,020.63 = 61,379.96 : x
  2. Step 2: Convert to fraction form
    113,980.95/171,020.63 = 61,379.96/x
  3. Step 3: Cross multiply
    113,980.95x = 171,020.63 × 61,379.96
  4. Step 4: Simplify right side
    113,980.95x = 10,497,238,266.57
  5. Step 5: Solve for x
    x = 10,497,238,266.57/113,980.95
  6. Step 6: Final answer
    x = 92,096.43

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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.