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Finding the Fourth Proportional to 190,912.20, 286,368.30 and 159,808.20

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Solution

The fourth proportional to 190,912.20, 286,368.30 and 159,808.20 is: 239,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,912.20 : 286,368.30 = 159,808.20 : x
  2. Step 2: Convert to fraction form
    190,912.20/286,368.30 = 159,808.20/x
  3. Step 3: Cross multiply
    190,912.20x = 286,368.30 × 159,808.20
  4. Step 4: Simplify right side
    190,912.20x = 45,764,002,560.06
  5. Step 5: Solve for x
    x = 45,764,002,560.06/190,912.20
  6. Step 6: Final answer
    x = 239,712.30

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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.