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Finding the Fourth Proportional to 219,999.78, 329,999.67 and 114,794.15

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Solution

The fourth proportional to 219,999.78, 329,999.67 and 114,794.15 is: 172,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,999.78 : 329,999.67 = 114,794.15 : x
  2. Step 2: Convert to fraction form
    219,999.78/329,999.67 = 114,794.15/x
  3. Step 3: Cross multiply
    219,999.78x = 329,999.67 × 114,794.15
  4. Step 4: Simplify right side
    219,999.78x = 37,882,029,967.93
  5. Step 5: Solve for x
    x = 37,882,029,967.93/219,999.78
  6. Step 6: Final answer
    x = 172,191.22

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1.5x scale

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.