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Finding the Fourth Proportional to 716,347.14, 988,574.37 and 394,057.25

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Solution

The fourth proportional to 716,347.14, 988,574.37 and 394,057.25 is: 543,807.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,347.14 : 988,574.37 = 394,057.25 : x
  2. Step 2: Convert to fraction form
    716,347.14/988,574.37 = 394,057.25/x
  3. Step 3: Cross multiply
    716,347.14x = 988,574.37 × 394,057.25
  4. Step 4: Simplify right side
    716,347.14x = 389,554,902,726.55
  5. Step 5: Solve for x
    x = 389,554,902,726.55/716,347.14
  6. Step 6: Final answer
    x = 543,807.44

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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.