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Finding the Fourth Proportional to 269,191.20, 403,786.80 and 91,898.40

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Solution

The fourth proportional to 269,191.20, 403,786.80 and 91,898.40 is: 137,847.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,191.20 : 403,786.80 = 91,898.40 : x
  2. Step 2: Convert to fraction form
    269,191.20/403,786.80 = 91,898.40/x
  3. Step 3: Cross multiply
    269,191.20x = 403,786.80 × 91,898.40
  4. Step 4: Simplify right side
    269,191.20x = 37,107,360,861.12
  5. Step 5: Solve for x
    x = 37,107,360,861.12/269,191.20
  6. Step 6: Final answer
    x = 137,847.60

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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.