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Finding the Fourth Proportional to 66,602.36, 99,903.54 and 27,162.56

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Solution

The fourth proportional to 66,602.36, 99,903.54 and 27,162.56 is: 40,743.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,602.36 : 99,903.54 = 27,162.56 : x
  2. Step 2: Convert to fraction form
    66,602.36/99,903.54 = 27,162.56/x
  3. Step 3: Cross multiply
    66,602.36x = 99,903.54 × 27,162.56
  4. Step 4: Simplify right side
    66,602.36x = 2,713,635,399.94
  5. Step 5: Solve for x
    x = 2,713,635,399.94/66,602.36
  6. Step 6: Final answer
    x = 40,743.84

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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.