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Finding the Fourth Proportional to 7,062.54, 9,745.98 and 3,918.66

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Solution

The fourth proportional to 7,062.54, 9,745.98 and 3,918.66 is: 5,407.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,062.54 : 9,745.98 = 3,918.66 : x
  2. Step 2: Convert to fraction form
    7,062.54/9,745.98 = 3,918.66/x
  3. Step 3: Cross multiply
    7,062.54x = 9,745.98 × 3,918.66
  4. Step 4: Simplify right side
    7,062.54x = 38,191,181.99
  5. Step 5: Solve for x
    x = 38,191,181.99/7,062.54
  6. Step 6: Final answer
    x = 5,407.57

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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.