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Finding the Fourth Proportional to 322,797.70, 445,515.21 and 186,835.30

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Solution

The fourth proportional to 322,797.70, 445,515.21 and 186,835.30 is: 257,864.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,797.70 : 445,515.21 = 186,835.30 : x
  2. Step 2: Convert to fraction form
    322,797.70/445,515.21 = 186,835.30/x
  3. Step 3: Cross multiply
    322,797.70x = 445,515.21 × 186,835.30
  4. Step 4: Simplify right side
    322,797.70x = 83,237,967,914.91
  5. Step 5: Solve for x
    x = 83,237,967,914.91/322,797.70
  6. Step 6: Final answer
    x = 257,864.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.