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Finding the Fourth Proportional to 92,092.92, 138,268.62 and 47,146.38

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Solution

The fourth proportional to 92,092.92, 138,268.62 and 47,146.38 is: 70,785.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,092.92 : 138,268.62 = 47,146.38 : x
  2. Step 2: Convert to fraction form
    92,092.92/138,268.62 = 47,146.38/x
  3. Step 3: Cross multiply
    92,092.92x = 138,268.62 × 47,146.38
  4. Step 4: Simplify right side
    92,092.92x = 6,518,864,900.60
  5. Step 5: Solve for x
    x = 6,518,864,900.60/92,092.92
  6. Step 6: Final answer
    x = 70,785.73

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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.