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Finding the Fourth Proportional to 4,679.24, 7,018.52 and 1,561.28

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Solution

The fourth proportional to 4,679.24, 7,018.52 and 1,561.28 is: 2,341.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.24 : 7,018.52 = 1,561.28 : x
  2. Step 2: Convert to fraction form
    4,679.24/7,018.52 = 1,561.28/x
  3. Step 3: Cross multiply
    4,679.24x = 7,018.52 × 1,561.28
  4. Step 4: Simplify right side
    4,679.24x = 10,957,832.01
  5. Step 5: Solve for x
    x = 10,957,832.01/4,679.24
  6. Step 6: Final answer
    x = 2,341.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.