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Finding the Fourth Proportional to 627,965.91, 866,839.47 and 445,159.98

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Solution

The fourth proportional to 627,965.91, 866,839.47 and 445,159.98 is: 614,495.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,965.91 : 866,839.47 = 445,159.98 : x
  2. Step 2: Convert to fraction form
    627,965.91/866,839.47 = 445,159.98/x
  3. Step 3: Cross multiply
    627,965.91x = 866,839.47 × 445,159.98
  4. Step 4: Simplify right side
    627,965.91x = 385,882,241,128.41
  5. Step 5: Solve for x
    x = 385,882,241,128.41/627,965.91
  6. Step 6: Final answer
    x = 614,495.52

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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.