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Finding the Fourth Proportional to 7,673.92, 11,507.16 and 3,512.68

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Solution

The fourth proportional to 7,673.92, 11,507.16 and 3,512.68 is: 5,267.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,673.92 : 11,507.16 = 3,512.68 : x
  2. Step 2: Convert to fraction form
    7,673.92/11,507.16 = 3,512.68/x
  3. Step 3: Cross multiply
    7,673.92x = 11,507.16 × 3,512.68
  4. Step 4: Simplify right side
    7,673.92x = 40,420,970.79
  5. Step 5: Solve for x
    x = 40,420,970.79/7,673.92
  6. Step 6: Final answer
    x = 5,267.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.