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Finding the Fourth Proportional to 356,057.61, 491,359.46 and 194,912.76

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Solution

The fourth proportional to 356,057.61, 491,359.46 and 194,912.76 is: 268,979.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,057.61 : 491,359.46 = 194,912.76 : x
  2. Step 2: Convert to fraction form
    356,057.61/491,359.46 = 194,912.76/x
  3. Step 3: Cross multiply
    356,057.61x = 491,359.46 × 194,912.76
  4. Step 4: Simplify right side
    356,057.61x = 95,772,227,526.15
  5. Step 5: Solve for x
    x = 95,772,227,526.15/356,057.61
  6. Step 6: Final answer
    x = 268,979.58

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Double scale
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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.