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Finding the Fourth Proportional to 307,906.40, 462,334.80 and 167,938.40

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Solution

The fourth proportional to 307,906.40, 462,334.80 and 167,938.40 is: 252,166.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,906.40 : 462,334.80 = 167,938.40 : x
  2. Step 2: Convert to fraction form
    307,906.40/462,334.80 = 167,938.40/x
  3. Step 3: Cross multiply
    307,906.40x = 462,334.80 × 167,938.40
  4. Step 4: Simplify right side
    307,906.40x = 77,643,766,576.32
  5. Step 5: Solve for x
    x = 77,643,766,576.32/307,906.40
  6. Step 6: Final answer
    x = 252,166.78

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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.