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Finding the Fourth Proportional to 627,681.72, 866,241.03 and 352,065.45

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Solution

The fourth proportional to 627,681.72, 866,241.03 and 352,065.45 is: 485,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,681.72 : 866,241.03 = 352,065.45 : x
  2. Step 2: Convert to fraction form
    627,681.72/866,241.03 = 352,065.45/x
  3. Step 3: Cross multiply
    627,681.72x = 866,241.03 × 352,065.45
  4. Step 4: Simplify right side
    627,681.72x = 304,973,538,035.41
  5. Step 5: Solve for x
    x = 304,973,538,035.41/627,681.72
  6. Step 6: Final answer
    x = 485,872.90

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1.5x scale

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.