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Finding the Fourth Proportional to 1,749.24, 2,413.80 and 963

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Solution

The fourth proportional to 1,749.24, 2,413.80 and 963 is: 1,328.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,749.24 : 2,413.80 = 963 : x
  2. Step 2: Convert to fraction form
    1,749.24/2,413.80 = 963/x
  3. Step 3: Cross multiply
    1,749.24x = 2,413.80 × 963
  4. Step 4: Simplify right side
    1,749.24x = 2,324,489.40
  5. Step 5: Solve for x
    x = 2,324,489.40/1,749.24
  6. Step 6: Final answer
    x = 1,328.86

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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.