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Finding the Fourth Proportional to 7,725.70, 10,662.13 and 4,369.11

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Solution

The fourth proportional to 7,725.70, 10,662.13 and 4,369.11 is: 6,029.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.70 : 10,662.13 = 4,369.11 : x
  2. Step 2: Convert to fraction form
    7,725.70/10,662.13 = 4,369.11/x
  3. Step 3: Cross multiply
    7,725.70x = 10,662.13 × 4,369.11
  4. Step 4: Simplify right side
    7,725.70x = 46,584,018.80
  5. Step 5: Solve for x
    x = 46,584,018.80/7,725.70
  6. Step 6: Final answer
    x = 6,029.75

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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.