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Finding the Fourth Proportional to 65,958.76, 98,959.33 and 21,575.42

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Solution

The fourth proportional to 65,958.76, 98,959.33 and 21,575.42 is: 32,370.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,958.76 : 98,959.33 = 21,575.42 : x
  2. Step 2: Convert to fraction form
    65,958.76/98,959.33 = 21,575.42/x
  3. Step 3: Cross multiply
    65,958.76x = 98,959.33 × 21,575.42
  4. Step 4: Simplify right side
    65,958.76x = 2,135,088,558.93
  5. Step 5: Solve for x
    x = 2,135,088,558.93/65,958.76
  6. Step 6: Final answer
    x = 32,370.05

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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.