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Finding the Fourth Proportional to 5,782.13, 7,978.74 and 3,264.38

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Solution

The fourth proportional to 5,782.13, 7,978.74 and 3,264.38 is: 4,504.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,782.13 : 7,978.74 = 3,264.38 : x
  2. Step 2: Convert to fraction form
    5,782.13/7,978.74 = 3,264.38/x
  3. Step 3: Cross multiply
    5,782.13x = 7,978.74 × 3,264.38
  4. Step 4: Simplify right side
    5,782.13x = 26,045,639.28
  5. Step 5: Solve for x
    x = 26,045,639.28/5,782.13
  6. Step 6: Final answer
    x = 4,504.51

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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.