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Finding the Fourth Proportional to 92,402.64, 138,621.05 and 29,238.66

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Solution

The fourth proportional to 92,402.64, 138,621.05 and 29,238.66 is: 43,863.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,402.64 : 138,621.05 = 29,238.66 : x
  2. Step 2: Convert to fraction form
    92,402.64/138,621.05 = 29,238.66/x
  3. Step 3: Cross multiply
    92,402.64x = 138,621.05 × 29,238.66
  4. Step 4: Simplify right side
    92,402.64x = 4,053,093,749.79
  5. Step 5: Solve for x
    x = 4,053,093,749.79/92,402.64
  6. Step 6: Final answer
    x = 43,863.40

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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.