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Finding the Fourth Proportional to 66,171.28, 99,201.11 and 28,703.11

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Solution

The fourth proportional to 66,171.28, 99,201.11 and 28,703.11 is: 43,030.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,171.28 : 99,201.11 = 28,703.11 : x
  2. Step 2: Convert to fraction form
    66,171.28/99,201.11 = 28,703.11/x
  3. Step 3: Cross multiply
    66,171.28x = 99,201.11 × 28,703.11
  4. Step 4: Simplify right side
    66,171.28x = 2,847,380,166.94
  5. Step 5: Solve for x
    x = 2,847,380,166.94/66,171.28
  6. Step 6: Final answer
    x = 43,030.45

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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.