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Finding the Fourth Proportional to 215,181.12, 296,964.80 and 119,696.80

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Solution

The fourth proportional to 215,181.12, 296,964.80 and 119,696.80 is: 165,189.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,181.12 : 296,964.80 = 119,696.80 : x
  2. Step 2: Convert to fraction form
    215,181.12/296,964.80 = 119,696.80/x
  3. Step 3: Cross multiply
    215,181.12x = 296,964.80 × 119,696.80
  4. Step 4: Simplify right side
    215,181.12x = 35,545,736,272.64
  5. Step 5: Solve for x
    x = 35,545,736,272.64/215,181.12
  6. Step 6: Final answer
    x = 165,189.85

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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.