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Finding the Fourth Proportional to 92,424.35, 138,636.49 and 36,290.87

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Solution

The fourth proportional to 92,424.35, 138,636.49 and 36,290.87 is: 54,436.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,424.35 : 138,636.49 = 36,290.87 : x
  2. Step 2: Convert to fraction form
    92,424.35/138,636.49 = 36,290.87/x
  3. Step 3: Cross multiply
    92,424.35x = 138,636.49 × 36,290.87
  4. Step 4: Simplify right side
    92,424.35x = 5,031,238,835.85
  5. Step 5: Solve for x
    x = 5,031,238,835.85/92,424.35
  6. Step 6: Final answer
    x = 54,436.29

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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.