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Finding the Fourth Proportional to 92,618.69, 138,780.40 and 59,311.35

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Solution

The fourth proportional to 92,618.69, 138,780.40 and 59,311.35 is: 88,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,618.69 : 138,780.40 = 59,311.35 : x
  2. Step 2: Convert to fraction form
    92,618.69/138,780.40 = 59,311.35/x
  3. Step 3: Cross multiply
    92,618.69x = 138,780.40 × 59,311.35
  4. Step 4: Simplify right side
    92,618.69x = 8,231,252,877.54
  5. Step 5: Solve for x
    x = 8,231,252,877.54/92,618.69
  6. Step 6: Final answer
    x = 88,872.48

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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.