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Finding the Fourth Proportional to 391,683, 587,523.06 and 111,200.28

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Solution

The fourth proportional to 391,683, 587,523.06 and 111,200.28 is: 166,800.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,683 : 587,523.06 = 111,200.28 : x
  2. Step 2: Convert to fraction form
    391,683/587,523.06 = 111,200.28/x
  3. Step 3: Cross multiply
    391,683x = 587,523.06 × 111,200.28
  4. Step 4: Simplify right side
    391,683x = 65,332,728,778.46
  5. Step 5: Solve for x
    x = 65,332,728,778.46/391,683
  6. Step 6: Final answer
    x = 166,800.01

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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.