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Finding the Fourth Proportional to 66,057.75, 99,096.95 and 21,674.40

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Solution

The fourth proportional to 66,057.75, 99,096.95 and 21,674.40 is: 32,514.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,057.75 : 99,096.95 = 21,674.40 : x
  2. Step 2: Convert to fraction form
    66,057.75/99,096.95 = 21,674.40/x
  3. Step 3: Cross multiply
    66,057.75x = 99,096.95 × 21,674.40
  4. Step 4: Simplify right side
    66,057.75x = 2,147,867,196.32
  5. Step 5: Solve for x
    x = 2,147,867,196.32/66,057.75
  6. Step 6: Final answer
    x = 32,514.99

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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.