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Finding the Third Proportional to 188,011.50 and 291,261

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Solution

The third proportional to 188,011.50 and 291,261 is: 451,211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,011.50 : 291,261 = 291,261 : x
  2. Step 2: Convert to fraction form
    188,011.50/291,261 = 291,261/x
  3. Step 3: Cross multiply
    188,011.50x = 291,261 × 291,261
  4. Step 4: Simplify right side
    188,011.50x = 84,832,970,121
  5. Step 5: Solve for x
    x = 84,832,970,121/188,011.50
  6. Step 6: Final answer
    x = 451,211.60

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.