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Finding the Fourth Proportional to 7,420.67, 10,240.08 and 4,062.83

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Solution

The fourth proportional to 7,420.67, 10,240.08 and 4,062.83 is: 5,606.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.67 : 10,240.08 = 4,062.83 : x
  2. Step 2: Convert to fraction form
    7,420.67/10,240.08 = 4,062.83/x
  3. Step 3: Cross multiply
    7,420.67x = 10,240.08 × 4,062.83
  4. Step 4: Simplify right side
    7,420.67x = 41,603,653.03
  5. Step 5: Solve for x
    x = 41,603,653.03/7,420.67
  6. Step 6: Final answer
    x = 5,606.46

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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.