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Finding the Fourth Proportional to 3,625.56, 5,412 and 3,355.02

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Solution

The fourth proportional to 3,625.56, 5,412 and 3,355.02 is: 5,008.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,625.56 : 5,412 = 3,355.02 : x
  2. Step 2: Convert to fraction form
    3,625.56/5,412 = 3,355.02/x
  3. Step 3: Cross multiply
    3,625.56x = 5,412 × 3,355.02
  4. Step 4: Simplify right side
    3,625.56x = 18,157,368.24
  5. Step 5: Solve for x
    x = 18,157,368.24/3,625.56
  6. Step 6: Final answer
    x = 5,008.16

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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.