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Finding the Fourth Proportional to 639,076.40, 958,614.60 and 403,463.60

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Solution

The fourth proportional to 639,076.40, 958,614.60 and 403,463.60 is: 605,195.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,076.40 : 958,614.60 = 403,463.60 : x
  2. Step 2: Convert to fraction form
    639,076.40/958,614.60 = 403,463.60/x
  3. Step 3: Cross multiply
    639,076.40x = 958,614.60 × 403,463.60
  4. Step 4: Simplify right side
    639,076.40x = 386,766,097,528.56
  5. Step 5: Solve for x
    x = 386,766,097,528.56/639,076.40
  6. Step 6: Final answer
    x = 605,195.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.