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Finding the Third Proportional to 9,420 and 14,449.50

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Solution

The third proportional to 9,420 and 14,449.50 is: 22,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420 : 14,449.50 = 14,449.50 : x
  2. Step 2: Convert to fraction form
    9,420/14,449.50 = 14,449.50/x
  3. Step 3: Cross multiply
    9,420x = 14,449.50 × 14,449.50
  4. Step 4: Simplify right side
    9,420x = 208,788,050.25
  5. Step 5: Solve for x
    x = 208,788,050.25/9,420
  6. Step 6: Final answer
    x = 22,164.34

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.