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Finding the Fourth Proportional to 61,286.49, 84,566.13 and 34,423.85

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Solution

The fourth proportional to 61,286.49, 84,566.13 and 34,423.85 is: 47,499.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,286.49 : 84,566.13 = 34,423.85 : x
  2. Step 2: Convert to fraction form
    61,286.49/84,566.13 = 34,423.85/x
  3. Step 3: Cross multiply
    61,286.49x = 84,566.13 × 34,423.85
  4. Step 4: Simplify right side
    61,286.49x = 2,911,091,856.53
  5. Step 5: Solve for x
    x = 2,911,091,856.53/61,286.49
  6. Step 6: Final answer
    x = 47,499.73

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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.