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Finding the Fourth Proportional to 383,314.25, 528,951.66 and 219,936.17

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Solution

The fourth proportional to 383,314.25, 528,951.66 and 219,936.17 is: 303,499.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,314.25 : 528,951.66 = 219,936.17 : x
  2. Step 2: Convert to fraction form
    383,314.25/528,951.66 = 219,936.17/x
  3. Step 3: Cross multiply
    383,314.25x = 528,951.66 × 219,936.17
  4. Step 4: Simplify right side
    383,314.25x = 116,335,602,215.54
  5. Step 5: Solve for x
    x = 116,335,602,215.54/383,314.25
  6. Step 6: Final answer
    x = 303,499.29

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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.