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Finding the Fourth Proportional to 7,207.15, 9,945.85 and 4,063.31

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Solution

The fourth proportional to 7,207.15, 9,945.85 and 4,063.31 is: 5,607.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,207.15 : 9,945.85 = 4,063.31 : x
  2. Step 2: Convert to fraction form
    7,207.15/9,945.85 = 4,063.31/x
  3. Step 3: Cross multiply
    7,207.15x = 9,945.85 × 4,063.31
  4. Step 4: Simplify right side
    7,207.15x = 40,413,063.88
  5. Step 5: Solve for x
    x = 40,413,063.88/7,207.15
  6. Step 6: Final answer
    x = 5,607.36

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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.