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Finding the Fourth Proportional to 63,864.64, 95,806.68 and 18,890.20

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Solution

The fourth proportional to 63,864.64, 95,806.68 and 18,890.20 is: 28,338.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,864.64 : 95,806.68 = 18,890.20 : x
  2. Step 2: Convert to fraction form
    63,864.64/95,806.68 = 18,890.20/x
  3. Step 3: Cross multiply
    63,864.64x = 95,806.68 × 18,890.20
  4. Step 4: Simplify right side
    63,864.64x = 1,809,807,346.54
  5. Step 5: Solve for x
    x = 1,809,807,346.54/63,864.64
  6. Step 6: Final answer
    x = 28,338.18

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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.