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Finding the Third Proportional to 1,646.63 and 3,478.13

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Solution

The third proportional to 1,646.63 and 3,478.13 is: 7,346.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.63 : 3,478.13 = 3,478.13 : x
  2. Step 2: Convert to fraction form
    1,646.63/3,478.13 = 3,478.13/x
  3. Step 3: Cross multiply
    1,646.63x = 3,478.13 × 3,478.13
  4. Step 4: Simplify right side
    1,646.63x = 12,097,353.52
  5. Step 5: Solve for x
    x = 12,097,353.52/1,646.63
  6. Step 6: Final answer
    x = 7,346.76

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.