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Finding the Fourth Proportional to 5,678.17, 7,835.87 and 3,194.17

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Solution

The fourth proportional to 5,678.17, 7,835.87 and 3,194.17 is: 4,407.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.17 : 7,835.87 = 3,194.17 : x
  2. Step 2: Convert to fraction form
    5,678.17/7,835.87 = 3,194.17/x
  3. Step 3: Cross multiply
    5,678.17x = 7,835.87 × 3,194.17
  4. Step 4: Simplify right side
    5,678.17x = 25,029,089.27
  5. Step 5: Solve for x
    x = 25,029,089.27/5,678.17
  6. Step 6: Final answer
    x = 4,407.95

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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.