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Finding the Fourth Proportional to 5,746.24, 7,930.24 and 3,228.64

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Solution

The fourth proportional to 5,746.24, 7,930.24 and 3,228.64 is: 4,455.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,746.24 : 7,930.24 = 3,228.64 : x
  2. Step 2: Convert to fraction form
    5,746.24/7,930.24 = 3,228.64/x
  3. Step 3: Cross multiply
    5,746.24x = 7,930.24 × 3,228.64
  4. Step 4: Simplify right side
    5,746.24x = 25,603,890.07
  5. Step 5: Solve for x
    x = 25,603,890.07/5,746.24
  6. Step 6: Final answer
    x = 4,455.76

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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.