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Finding the Fourth Proportional to 642,512.97, 886,667.90 and 356,033.04

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Solution

The fourth proportional to 642,512.97, 886,667.90 and 356,033.04 is: 491,325.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,512.97 : 886,667.90 = 356,033.04 : x
  2. Step 2: Convert to fraction form
    642,512.97/886,667.90 = 356,033.04/x
  3. Step 3: Cross multiply
    642,512.97x = 886,667.90 × 356,033.04
  4. Step 4: Simplify right side
    642,512.97x = 315,683,066,127.25
  5. Step 5: Solve for x
    x = 315,683,066,127.25/642,512.97
  6. Step 6: Final answer
    x = 491,325.59

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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.