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Finding the Fourth Proportional to 187,749.79, 281,660.94 and 61,355.94

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Solution

The fourth proportional to 187,749.79, 281,660.94 and 61,355.94 is: 92,045.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,749.79 : 281,660.94 = 61,355.94 : x
  2. Step 2: Convert to fraction form
    187,749.79/281,660.94 = 61,355.94/x
  3. Step 3: Cross multiply
    187,749.79x = 281,660.94 × 61,355.94
  4. Step 4: Simplify right side
    187,749.79x = 17,281,571,428.20
  5. Step 5: Solve for x
    x = 17,281,571,428.20/187,749.79
  6. Step 6: Final answer
    x = 92,045.76

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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.