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Finding the Fourth Proportional to 2,781.16, 4,153.17 and 2,619.16

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Solution

The fourth proportional to 2,781.16, 4,153.17 and 2,619.16 is: 3,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.16 : 4,153.17 = 2,619.16 : x
  2. Step 2: Convert to fraction form
    2,781.16/4,153.17 = 2,619.16/x
  3. Step 3: Cross multiply
    2,781.16x = 4,153.17 × 2,619.16
  4. Step 4: Simplify right side
    2,781.16x = 10,877,816.74
  5. Step 5: Solve for x
    x = 10,877,816.74/2,781.16
  6. Step 6: Final answer
    x = 3,911.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.