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Finding the Fourth Proportional to 383,336.72, 529,027.79 and 211,254.23

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Solution

The fourth proportional to 383,336.72, 529,027.79 and 211,254.23 is: 291,543.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,336.72 : 529,027.79 = 211,254.23 : x
  2. Step 2: Convert to fraction form
    383,336.72/529,027.79 = 211,254.23/x
  3. Step 3: Cross multiply
    383,336.72x = 529,027.79 × 211,254.23
  4. Step 4: Simplify right side
    383,336.72x = 111,759,358,425.05
  5. Step 5: Solve for x
    x = 111,759,358,425.05/383,336.72
  6. Step 6: Final answer
    x = 291,543.58

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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.