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Finding the Fourth Proportional to 215,315.80, 322,973.70 and 168,608.60

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Solution

The fourth proportional to 215,315.80, 322,973.70 and 168,608.60 is: 252,912.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,315.80 : 322,973.70 = 168,608.60 : x
  2. Step 2: Convert to fraction form
    215,315.80/322,973.70 = 168,608.60/x
  3. Step 3: Cross multiply
    215,315.80x = 322,973.70 × 168,608.60
  4. Step 4: Simplify right side
    215,315.80x = 54,456,143,393.82
  5. Step 5: Solve for x
    x = 54,456,143,393.82/215,315.80
  6. Step 6: Final answer
    x = 252,912.90

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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.