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Finding the Fourth Proportional to 381,609.90, 526,717.11 and 220,566.06

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Solution

The fourth proportional to 381,609.90, 526,717.11 and 220,566.06 is: 304,436.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,609.90 : 526,717.11 = 220,566.06 : x
  2. Step 2: Convert to fraction form
    381,609.90/526,717.11 = 220,566.06/x
  3. Step 3: Cross multiply
    381,609.90x = 526,717.11 × 220,566.06
  4. Step 4: Simplify right side
    381,609.90x = 116,175,917,687.29
  5. Step 5: Solve for x
    x = 116,175,917,687.29/381,609.90
  6. Step 6: Final answer
    x = 304,436.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.