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Finding the Fourth Proportional to 316,516.56, 474,758.28 and 79,861.44

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Solution

The fourth proportional to 316,516.56, 474,758.28 and 79,861.44 is: 119,787.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,516.56 : 474,758.28 = 79,861.44 : x
  2. Step 2: Convert to fraction form
    316,516.56/474,758.28 = 79,861.44/x
  3. Step 3: Cross multiply
    316,516.56x = 474,758.28 × 79,861.44
  4. Step 4: Simplify right side
    316,516.56x = 37,914,879,892.72
  5. Step 5: Solve for x
    x = 37,914,879,892.72/316,516.56
  6. Step 6: Final answer
    x = 119,787.98

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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.