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Finding the Fourth Proportional to 38,696, 53,405.52 and 22,781.92

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Solution

The fourth proportional to 38,696, 53,405.52 and 22,781.92 is: 31,442.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,696 : 53,405.52 = 22,781.92 : x
  2. Step 2: Convert to fraction form
    38,696/53,405.52 = 22,781.92/x
  3. Step 3: Cross multiply
    38,696x = 53,405.52 × 22,781.92
  4. Step 4: Simplify right side
    38,696x = 1,216,680,284.20
  5. Step 5: Solve for x
    x = 1,216,680,284.20/38,696
  6. Step 6: Final answer
    x = 31,442.02

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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.