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Finding the Fourth Proportional to 123,372.92, 185,031.70 and 56,749.08

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Solution

The fourth proportional to 123,372.92, 185,031.70 and 56,749.08 is: 85,110.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,372.92 : 185,031.70 = 56,749.08 : x
  2. Step 2: Convert to fraction form
    123,372.92/185,031.70 = 56,749.08/x
  3. Step 3: Cross multiply
    123,372.92x = 185,031.70 × 56,749.08
  4. Step 4: Simplify right side
    123,372.92x = 10,500,378,745.84
  5. Step 5: Solve for x
    x = 10,500,378,745.84/123,372.92
  6. Step 6: Final answer
    x = 85,110.89

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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.