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Finding the Fourth Proportional to 133,014.68, 183,411.42 and 108,739.88

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Solution

The fourth proportional to 133,014.68, 183,411.42 and 108,739.88 is: 149,939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,014.68 : 183,411.42 = 108,739.88 : x
  2. Step 2: Convert to fraction form
    133,014.68/183,411.42 = 108,739.88/x
  3. Step 3: Cross multiply
    133,014.68x = 183,411.42 × 108,739.88
  4. Step 4: Simplify right side
    133,014.68x = 19,944,135,801.43
  5. Step 5: Solve for x
    x = 19,944,135,801.43/133,014.68
  6. Step 6: Final answer
    x = 149,939.36

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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.