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Finding the Fourth Proportional to 7,699.86, 10,625.80 and 4,163.06

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Solution

The fourth proportional to 7,699.86, 10,625.80 and 4,163.06 is: 5,745.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,699.86 : 10,625.80 = 4,163.06 : x
  2. Step 2: Convert to fraction form
    7,699.86/10,625.80 = 4,163.06/x
  3. Step 3: Cross multiply
    7,699.86x = 10,625.80 × 4,163.06
  4. Step 4: Simplify right side
    7,699.86x = 44,235,866.91
  5. Step 5: Solve for x
    x = 44,235,866.91/7,699.86
  6. Step 6: Final answer
    x = 5,745.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.