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Finding the Fourth Proportional to 63,636, 95,454.21 and 21,516.42

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Solution

The fourth proportional to 63,636, 95,454.21 and 21,516.42 is: 32,274.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,636 : 95,454.21 = 21,516.42 : x
  2. Step 2: Convert to fraction form
    63,636/95,454.21 = 21,516.42/x
  3. Step 3: Cross multiply
    63,636x = 95,454.21 × 21,516.42
  4. Step 4: Simplify right side
    63,636x = 2,053,832,873.13
  5. Step 5: Solve for x
    x = 2,053,832,873.13/63,636
  6. Step 6: Final answer
    x = 32,274.70

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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.