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Finding the Fourth Proportional to 368,057.72, 507,884.64 and 215,131.76

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Solution

The fourth proportional to 368,057.72, 507,884.64 and 215,131.76 is: 296,861.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,057.72 : 507,884.64 = 215,131.76 : x
  2. Step 2: Convert to fraction form
    368,057.72/507,884.64 = 215,131.76/x
  3. Step 3: Cross multiply
    368,057.72x = 507,884.64 × 215,131.76
  4. Step 4: Simplify right side
    368,057.72x = 109,262,116,480.17
  5. Step 5: Solve for x
    x = 109,262,116,480.17/368,057.72
  6. Step 6: Final answer
    x = 296,861.36

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