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Finding the Fourth Proportional to 624,643.28, 862,008.04 and 338,163.36

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Solution

The fourth proportional to 624,643.28, 862,008.04 and 338,163.36 is: 466,665.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,643.28 : 862,008.04 = 338,163.36 : x
  2. Step 2: Convert to fraction form
    624,643.28/862,008.04 = 338,163.36/x
  3. Step 3: Cross multiply
    624,643.28x = 862,008.04 × 338,163.36
  4. Step 4: Simplify right side
    624,643.28x = 291,499,535,153.41
  5. Step 5: Solve for x
    x = 291,499,535,153.41/624,643.28
  6. Step 6: Final answer
    x = 466,665.61

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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.