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Finding the Fourth Proportional to 96,687.81, 145,062.45 and 61,369.11

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Solution

The fourth proportional to 96,687.81, 145,062.45 and 61,369.11 is: 92,073.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,687.81 : 145,062.45 = 61,369.11 : x
  2. Step 2: Convert to fraction form
    96,687.81/145,062.45 = 61,369.11/x
  3. Step 3: Cross multiply
    96,687.81x = 145,062.45 × 61,369.11
  4. Step 4: Simplify right side
    96,687.81x = 8,902,353,450.92
  5. Step 5: Solve for x
    x = 8,902,353,450.92/96,687.81
  6. Step 6: Final answer
    x = 92,073.17

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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.