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Finding the Fourth Proportional to 38,340.90, 52,906.73 and 28,274.76

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Solution

The fourth proportional to 38,340.90, 52,906.73 and 28,274.76 is: 39,016.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,340.90 : 52,906.73 = 28,274.76 : x
  2. Step 2: Convert to fraction form
    38,340.90/52,906.73 = 28,274.76/x
  3. Step 3: Cross multiply
    38,340.90x = 52,906.73 × 28,274.76
  4. Step 4: Simplify right side
    38,340.90x = 1,495,925,093.13
  5. Step 5: Solve for x
    x = 1,495,925,093.13/38,340.90
  6. Step 6: Final answer
    x = 39,016.43

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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.