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Finding the Fourth Proportional to 7,649.91, 10,556.93 and 4,292.80

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Solution

The fourth proportional to 7,649.91, 10,556.93 and 4,292.80 is: 5,924.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,649.91 : 10,556.93 = 4,292.80 : x
  2. Step 2: Convert to fraction form
    7,649.91/10,556.93 = 4,292.80/x
  3. Step 3: Cross multiply
    7,649.91x = 10,556.93 × 4,292.80
  4. Step 4: Simplify right side
    7,649.91x = 45,318,773.44
  5. Step 5: Solve for x
    x = 45,318,773.44/7,649.91
  6. Step 6: Final answer
    x = 5,924.09

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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.