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Finding the Fourth Proportional to 316,796.06, 437,178.57 and 189,501.73

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Solution

The fourth proportional to 316,796.06, 437,178.57 and 189,501.73 is: 261,512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,796.06 : 437,178.57 = 189,501.73 : x
  2. Step 2: Convert to fraction form
    316,796.06/437,178.57 = 189,501.73/x
  3. Step 3: Cross multiply
    316,796.06x = 437,178.57 × 189,501.73
  4. Step 4: Simplify right side
    316,796.06x = 82,846,093,530.35
  5. Step 5: Solve for x
    x = 82,846,093,530.35/316,796.06
  6. Step 6: Final answer
    x = 261,512.38

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Double scale
Find fourth proportional to 316,797.06, 437,179.95 and 189,502.73
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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.