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Finding the Fourth Proportional to 190,906.30, 286,359.45 and 66,247.30

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Solution

The fourth proportional to 190,906.30, 286,359.45 and 66,247.30 is: 99,370.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,906.30 : 286,359.45 = 66,247.30 : x
  2. Step 2: Convert to fraction form
    190,906.30/286,359.45 = 66,247.30/x
  3. Step 3: Cross multiply
    190,906.30x = 286,359.45 × 66,247.30
  4. Step 4: Simplify right side
    190,906.30x = 18,970,540,391.99
  5. Step 5: Solve for x
    x = 18,970,540,391.99/190,906.30
  6. Step 6: Final answer
    x = 99,370.95

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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.