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Finding the Fourth Proportional to 57,081.99, 85,612.95 and 17,639.44

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Solution

The fourth proportional to 57,081.99, 85,612.95 and 17,639.44 is: 26,456.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,081.99 : 85,612.95 = 17,639.44 : x
  2. Step 2: Convert to fraction form
    57,081.99/85,612.95 = 17,639.44/x
  3. Step 3: Cross multiply
    57,081.99x = 85,612.95 × 17,639.44
  4. Step 4: Simplify right side
    57,081.99x = 1,510,164,667.91
  5. Step 5: Solve for x
    x = 1,510,164,667.91/57,081.99
  6. Step 6: Final answer
    x = 26,456.06

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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.