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Finding the Third Proportional to 7,188.75 and 11,045.25

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Solution

The third proportional to 7,188.75 and 11,045.25 is: 16,970.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.75 : 11,045.25 = 11,045.25 : x
  2. Step 2: Convert to fraction form
    7,188.75/11,045.25 = 11,045.25/x
  3. Step 3: Cross multiply
    7,188.75x = 11,045.25 × 11,045.25
  4. Step 4: Simplify right side
    7,188.75x = 121,997,547.56
  5. Step 5: Solve for x
    x = 121,997,547.56/7,188.75
  6. Step 6: Final answer
    x = 16,970.62

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.