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Finding the Fourth Proportional to 383,099.15, 528,630.54 and 219,747.20

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Solution

The fourth proportional to 383,099.15, 528,630.54 and 219,747.20 is: 303,224.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,099.15 : 528,630.54 = 219,747.20 : x
  2. Step 2: Convert to fraction form
    383,099.15/528,630.54 = 219,747.20/x
  3. Step 3: Cross multiply
    383,099.15x = 528,630.54 × 219,747.20
  4. Step 4: Simplify right side
    383,099.15x = 116,165,077,532.28
  5. Step 5: Solve for x
    x = 116,165,077,532.28/383,099.15
  6. Step 6: Final answer
    x = 303,224.57

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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.