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Finding the Fourth Proportional to 64,782.67, 89,402.85 and 36,102.37

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Solution

The fourth proportional to 64,782.67, 89,402.85 and 36,102.37 is: 49,822.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,782.67 : 89,402.85 = 36,102.37 : x
  2. Step 2: Convert to fraction form
    64,782.67/89,402.85 = 36,102.37/x
  3. Step 3: Cross multiply
    64,782.67x = 89,402.85 × 36,102.37
  4. Step 4: Simplify right side
    64,782.67x = 3,227,654,890.37
  5. Step 5: Solve for x
    x = 3,227,654,890.37/64,782.67
  6. Step 6: Final answer
    x = 49,822.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.