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Finding the Fourth Proportional to 383,215.80, 528,837.93 and 222,164.22

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Solution

The fourth proportional to 383,215.80, 528,837.93 and 222,164.22 is: 306,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,215.80 : 528,837.93 = 222,164.22 : x
  2. Step 2: Convert to fraction form
    383,215.80/528,837.93 = 222,164.22/x
  3. Step 3: Cross multiply
    383,215.80x = 528,837.93 × 222,164.22
  4. Step 4: Simplify right side
    383,215.80x = 117,488,866,224.87
  5. Step 5: Solve for x
    x = 117,488,866,224.87/383,215.80
  6. Step 6: Final answer
    x = 306,586.70

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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.