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Finding the Fourth Proportional to 35,469.65, 53,171.79 and 12,079.82

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Solution

The fourth proportional to 35,469.65, 53,171.79 and 12,079.82 is: 18,108.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,469.65 : 53,171.79 = 12,079.82 : x
  2. Step 2: Convert to fraction form
    35,469.65/53,171.79 = 12,079.82/x
  3. Step 3: Cross multiply
    35,469.65x = 53,171.79 × 12,079.82
  4. Step 4: Simplify right side
    35,469.65x = 642,305,386.42
  5. Step 5: Solve for x
    x = 642,305,386.42/35,469.65
  6. Step 6: Final answer
    x = 18,108.59

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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.