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Finding the Fourth Proportional to 716,177.68, 988,333.44 and 393,893.16

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Solution

The fourth proportional to 716,177.68, 988,333.44 and 393,893.16 is: 543,577.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,177.68 : 988,333.44 = 393,893.16 : x
  2. Step 2: Convert to fraction form
    716,177.68/988,333.44 = 393,893.16/x
  3. Step 3: Cross multiply
    716,177.68x = 988,333.44 × 393,893.16
  4. Step 4: Simplify right side
    716,177.68x = 389,297,781,815.27
  5. Step 5: Solve for x
    x = 389,297,781,815.27/716,177.68
  6. Step 6: Final answer
    x = 543,577.09

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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.