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Finding the Fourth Proportional to 547,761.60, 821,642.40 and 192,830.40

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Solution

The fourth proportional to 547,761.60, 821,642.40 and 192,830.40 is: 289,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,761.60 : 821,642.40 = 192,830.40 : x
  2. Step 2: Convert to fraction form
    547,761.60/821,642.40 = 192,830.40/x
  3. Step 3: Cross multiply
    547,761.60x = 821,642.40 × 192,830.40
  4. Step 4: Simplify right side
    547,761.60x = 158,437,632,648.96
  5. Step 5: Solve for x
    x = 158,437,632,648.96/547,761.60
  6. Step 6: Final answer
    x = 289,245.60

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Similar ratio
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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.