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Finding the Third Proportional to 9,619.50 and 14,430

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Solution

The third proportional to 9,619.50 and 14,430 is: 21,646.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,619.50 : 14,430 = 14,430 : x
  2. Step 2: Convert to fraction form
    9,619.50/14,430 = 14,430/x
  3. Step 3: Cross multiply
    9,619.50x = 14,430 × 14,430
  4. Step 4: Simplify right side
    9,619.50x = 208,224,900
  5. Step 5: Solve for x
    x = 208,224,900/9,619.50
  6. Step 6: Final answer
    x = 21,646.13

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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.