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Finding the Fourth Proportional to 291,555.20, 437,505.60 and 192,000.80

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Solution

The fourth proportional to 291,555.20, 437,505.60 and 192,000.80 is: 288,115.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,555.20 : 437,505.60 = 192,000.80 : x
  2. Step 2: Convert to fraction form
    291,555.20/437,505.60 = 192,000.80/x
  3. Step 3: Cross multiply
    291,555.20x = 437,505.60 × 192,000.80
  4. Step 4: Simplify right side
    291,555.20x = 84,001,425,204.48
  5. Step 5: Solve for x
    x = 84,001,425,204.48/291,555.20
  6. Step 6: Final answer
    x = 288,115.00

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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.