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Finding the Fourth Proportional to 112,469, 155,207.49 and 62,168

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Solution

The fourth proportional to 112,469, 155,207.49 and 62,168 is: 85,791.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,469 : 155,207.49 = 62,168 : x
  2. Step 2: Convert to fraction form
    112,469/155,207.49 = 62,168/x
  3. Step 3: Cross multiply
    112,469x = 155,207.49 × 62,168
  4. Step 4: Simplify right side
    112,469x = 9,648,939,238.32
  5. Step 5: Solve for x
    x = 9,648,939,238.32/112,469
  6. Step 6: Final answer
    x = 85,791.99

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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.