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Finding the Fourth Proportional to 6,673.92, 9,209.68 and 3,689.68

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Solution

The fourth proportional to 6,673.92, 9,209.68 and 3,689.68 is: 5,091.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,673.92 : 9,209.68 = 3,689.68 : x
  2. Step 2: Convert to fraction form
    6,673.92/9,209.68 = 3,689.68/x
  3. Step 3: Cross multiply
    6,673.92x = 9,209.68 × 3,689.68
  4. Step 4: Simplify right side
    6,673.92x = 33,980,772.10
  5. Step 5: Solve for x
    x = 33,980,772.10/6,673.92
  6. Step 6: Final answer
    x = 5,091.58

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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.