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Finding the Fourth Proportional to 188,548.21, 260,201.12 and 103,665.27

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Solution

The fourth proportional to 188,548.21, 260,201.12 and 103,665.27 is: 143,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,548.21 : 260,201.12 = 103,665.27 : x
  2. Step 2: Convert to fraction form
    188,548.21/260,201.12 = 103,665.27/x
  3. Step 3: Cross multiply
    188,548.21x = 260,201.12 × 103,665.27
  4. Step 4: Simplify right side
    188,548.21x = 26,973,819,359.10
  5. Step 5: Solve for x
    x = 26,973,819,359.10/188,548.21
  6. Step 6: Final answer
    x = 143,060.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.