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Finding the Fourth Proportional to 291,260.30, 436,890.45 and 263,266.70

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Solution

The fourth proportional to 291,260.30, 436,890.45 and 263,266.70 is: 394,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,260.30 : 436,890.45 = 263,266.70 : x
  2. Step 2: Convert to fraction form
    291,260.30/436,890.45 = 263,266.70/x
  3. Step 3: Cross multiply
    291,260.30x = 436,890.45 × 263,266.70
  4. Step 4: Simplify right side
    291,260.30x = 115,018,707,033.02
  5. Step 5: Solve for x
    x = 115,018,707,033.02/291,260.30
  6. Step 6: Final answer
    x = 394,900.05

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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.