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Finding the Fourth Proportional to 716,245.00, 988,407.56 and 393,935.87

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Solution

The fourth proportional to 716,245.00, 988,407.56 and 393,935.87 is: 543,625.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,245.00 : 988,407.56 = 393,935.87 : x
  2. Step 2: Convert to fraction form
    716,245.00/988,407.56 = 393,935.87/x
  3. Step 3: Cross multiply
    716,245.00x = 988,407.56 × 393,935.87
  4. Step 4: Simplify right side
    716,245.00x = 389,369,195,519.04
  5. Step 5: Solve for x
    x = 389,369,195,519.04/716,245.00
  6. Step 6: Final answer
    x = 543,625.71

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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.