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Finding the Fourth Proportional to 61,187.86, 91,790.54 and 27,031.68

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Solution

The fourth proportional to 61,187.86, 91,790.54 and 27,031.68 is: 40,551.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,187.86 : 91,790.54 = 27,031.68 : x
  2. Step 2: Convert to fraction form
    61,187.86/91,790.54 = 27,031.68/x
  3. Step 3: Cross multiply
    61,187.86x = 91,790.54 × 27,031.68
  4. Step 4: Simplify right side
    61,187.86x = 2,481,252,045.35
  5. Step 5: Solve for x
    x = 2,481,252,045.35/61,187.86
  6. Step 6: Final answer
    x = 40,551.38

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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.