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Finding the Fourth Proportional to 472,266.72, 708,212.16 and 172,679.04

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Solution

The fourth proportional to 472,266.72, 708,212.16 and 172,679.04 is: 258,949.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,266.72 : 708,212.16 = 172,679.04 : x
  2. Step 2: Convert to fraction form
    472,266.72/708,212.16 = 172,679.04/x
  3. Step 3: Cross multiply
    472,266.72x = 708,212.16 × 172,679.04
  4. Step 4: Simplify right side
    472,266.72x = 122,293,395,905.13
  5. Step 5: Solve for x
    x = 122,293,395,905.13/472,266.72
  6. Step 6: Final answer
    x = 258,949.85

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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.