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Finding the Fourth Proportional to 7,062.48, 9,745.76 and 3,918.56

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Solution

The fourth proportional to 7,062.48, 9,745.76 and 3,918.56 is: 5,407.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,062.48 : 9,745.76 = 3,918.56 : x
  2. Step 2: Convert to fraction form
    7,062.48/9,745.76 = 3,918.56/x
  3. Step 3: Cross multiply
    7,062.48x = 9,745.76 × 3,918.56
  4. Step 4: Simplify right side
    7,062.48x = 38,189,345.31
  5. Step 5: Solve for x
    x = 38,189,345.31/7,062.48
  6. Step 6: Final answer
    x = 5,407.36

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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.