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Finding the Fourth Proportional to 2,556.11, 3,834.51 and 913.10

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Solution

The fourth proportional to 2,556.11, 3,834.51 and 913.10 is: 1,369.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,556.11 : 3,834.51 = 913.10 : x
  2. Step 2: Convert to fraction form
    2,556.11/3,834.51 = 913.10/x
  3. Step 3: Cross multiply
    2,556.11x = 3,834.51 × 913.10
  4. Step 4: Simplify right side
    2,556.11x = 3,501,291.08
  5. Step 5: Solve for x
    x = 3,501,291.08/2,556.11
  6. Step 6: Final answer
    x = 1,369.77

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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.