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Finding the Fourth Proportional to 6,648.31, 9,163.42 and 4,655.31

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Solution

The fourth proportional to 6,648.31, 9,163.42 and 4,655.31 is: 6,416.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648.31 : 9,163.42 = 4,655.31 : x
  2. Step 2: Convert to fraction form
    6,648.31/9,163.42 = 4,655.31/x
  3. Step 3: Cross multiply
    6,648.31x = 9,163.42 × 4,655.31
  4. Step 4: Simplify right side
    6,648.31x = 42,658,560.76
  5. Step 5: Solve for x
    x = 42,658,560.76/6,648.31
  6. Step 6: Final answer
    x = 6,416.45

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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.