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Finding the Fourth Proportional to 2,409.75, 3,613.01 and 1,110.51

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Solution

The fourth proportional to 2,409.75, 3,613.01 and 1,110.51 is: 1,665.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,409.75 : 3,613.01 = 1,110.51 : x
  2. Step 2: Convert to fraction form
    2,409.75/3,613.01 = 1,110.51/x
  3. Step 3: Cross multiply
    2,409.75x = 3,613.01 × 1,110.51
  4. Step 4: Simplify right side
    2,409.75x = 4,012,278.18
  5. Step 5: Solve for x
    x = 4,012,278.18/2,409.75
  6. Step 6: Final answer
    x = 1,665.02

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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.