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Finding the Fourth Proportional to 5,706.93, 7,873.80 and 3,188.70

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Solution

The fourth proportional to 5,706.93, 7,873.80 and 3,188.70 is: 4,399.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,706.93 : 7,873.80 = 3,188.70 : x
  2. Step 2: Convert to fraction form
    5,706.93/7,873.80 = 3,188.70/x
  3. Step 3: Cross multiply
    5,706.93x = 7,873.80 × 3,188.70
  4. Step 4: Simplify right side
    5,706.93x = 25,107,186.06
  5. Step 5: Solve for x
    x = 25,107,186.06/5,706.93
  6. Step 6: Final answer
    x = 4,399.42

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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.