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Finding the Fourth Proportional to 66,709.06, 100,053.09 and 21,732.03

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Solution

The fourth proportional to 66,709.06, 100,053.09 and 21,732.03 is: 32,594.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,709.06 : 100,053.09 = 21,732.03 : x
  2. Step 2: Convert to fraction form
    66,709.06/100,053.09 = 21,732.03/x
  3. Step 3: Cross multiply
    66,709.06x = 100,053.09 × 21,732.03
  4. Step 4: Simplify right side
    66,709.06x = 2,174,356,753.47
  5. Step 5: Solve for x
    x = 2,174,356,753.47/66,709.06
  6. Step 6: Final answer
    x = 32,594.63

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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.