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Finding the Fourth Proportional to 403,997.66, 557,516.64 and 222,712.68

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Solution

The fourth proportional to 403,997.66, 557,516.64 and 222,712.68 is: 307,343.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,997.66 : 557,516.64 = 222,712.68 : x
  2. Step 2: Convert to fraction form
    403,997.66/557,516.64 = 222,712.68/x
  3. Step 3: Cross multiply
    403,997.66x = 557,516.64 × 222,712.68
  4. Step 4: Simplify right side
    403,997.66x = 124,166,025,039.00
  5. Step 5: Solve for x
    x = 124,166,025,039.00/403,997.66
  6. Step 6: Final answer
    x = 307,343.43

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1.5x scale

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.