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Finding the Fourth Proportional to 92,062.45, 138,093.69 and 28,892.32

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Solution

The fourth proportional to 92,062.45, 138,093.69 and 28,892.32 is: 43,338.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,062.45 : 138,093.69 = 28,892.32 : x
  2. Step 2: Convert to fraction form
    92,062.45/138,093.69 = 28,892.32/x
  3. Step 3: Cross multiply
    92,062.45x = 138,093.69 × 28,892.32
  4. Step 4: Simplify right side
    92,062.45x = 3,989,847,081.46
  5. Step 5: Solve for x
    x = 3,989,847,081.46/92,062.45
  6. Step 6: Final answer
    x = 43,338.48

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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.