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Finding the Fourth Proportional to 355,453.25, 533,127.32 and 130,761.14

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Solution

The fourth proportional to 355,453.25, 533,127.32 and 130,761.14 is: 196,122.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,453.25 : 533,127.32 = 130,761.14 : x
  2. Step 2: Convert to fraction form
    355,453.25/533,127.32 = 130,761.14/x
  3. Step 3: Cross multiply
    355,453.25x = 533,127.32 × 130,761.14
  4. Step 4: Simplify right side
    355,453.25x = 69,712,335,474.54
  5. Step 5: Solve for x
    x = 69,712,335,474.54/355,453.25
  6. Step 6: Final answer
    x = 196,122.37

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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.