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Finding the Fourth Proportional to 627,958.40, 866,829.08 and 445,152.47

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Solution

The fourth proportional to 627,958.40, 866,829.08 and 445,152.47 is: 614,485.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,958.40 : 866,829.08 = 445,152.47 : x
  2. Step 2: Convert to fraction form
    627,958.40/866,829.08 = 445,152.47/x
  3. Step 3: Cross multiply
    627,958.40x = 866,829.08 × 445,152.47
  4. Step 4: Simplify right side
    627,958.40x = 385,871,102,808.56
  5. Step 5: Solve for x
    x = 385,871,102,808.56/627,958.40
  6. Step 6: Final answer
    x = 614,485.14

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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.