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Finding the Fourth Proportional to 322,503.66, 445,019.67 and 186,540.30

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Solution

The fourth proportional to 322,503.66, 445,019.67 and 186,540.30 is: 257,405.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,503.66 : 445,019.67 = 186,540.30 : x
  2. Step 2: Convert to fraction form
    322,503.66/445,019.67 = 186,540.30/x
  3. Step 3: Cross multiply
    322,503.66x = 445,019.67 × 186,540.30
  4. Step 4: Simplify right side
    322,503.66x = 83,014,102,747.70
  5. Step 5: Solve for x
    x = 83,014,102,747.70/322,503.66
  6. Step 6: Final answer
    x = 257,405.15

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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.