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Finding the Fourth Proportional to 133,363.65, 184,108.76 and 103,080.54

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Solution

The fourth proportional to 133,363.65, 184,108.76 and 103,080.54 is: 142,302.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,363.65 : 184,108.76 = 103,080.54 : x
  2. Step 2: Convert to fraction form
    133,363.65/184,108.76 = 103,080.54/x
  3. Step 3: Cross multiply
    133,363.65x = 184,108.76 × 103,080.54
  4. Step 4: Simplify right side
    133,363.65x = 18,978,030,505.30
  5. Step 5: Solve for x
    x = 18,978,030,505.30/133,363.65
  6. Step 6: Final answer
    x = 142,302.87

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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.