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Finding the Fourth Proportional to 215,213.40, 322,877.70 and 192,000.60

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Solution

The fourth proportional to 215,213.40, 322,877.70 and 192,000.60 is: 288,052.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,213.40 : 322,877.70 = 192,000.60 : x
  2. Step 2: Convert to fraction form
    215,213.40/322,877.70 = 192,000.60/x
  3. Step 3: Cross multiply
    215,213.40x = 322,877.70 × 192,000.60
  4. Step 4: Simplify right side
    215,213.40x = 61,992,712,126.62
  5. Step 5: Solve for x
    x = 61,992,712,126.62/215,213.40
  6. Step 6: Final answer
    x = 288,052.29

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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.