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Finding the Fourth Proportional to 472,664.70, 708,997.05 and 157,080.60

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Solution

The fourth proportional to 472,664.70, 708,997.05 and 157,080.60 is: 235,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,664.70 : 708,997.05 = 157,080.60 : x
  2. Step 2: Convert to fraction form
    472,664.70/708,997.05 = 157,080.60/x
  3. Step 3: Cross multiply
    472,664.70x = 708,997.05 × 157,080.60
  4. Step 4: Simplify right side
    472,664.70x = 111,369,682,012.23
  5. Step 5: Solve for x
    x = 111,369,682,012.23/472,664.70
  6. Step 6: Final answer
    x = 235,620.90

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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.