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Finding the Fourth Proportional to 383,359.51, 529,039.71 and 211,283.78

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Solution

The fourth proportional to 383,359.51, 529,039.71 and 211,283.78 is: 291,573.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,359.51 : 529,039.71 = 211,283.78 : x
  2. Step 2: Convert to fraction form
    383,359.51/529,039.71 = 211,283.78/x
  3. Step 3: Cross multiply
    383,359.51x = 529,039.71 × 211,283.78
  4. Step 4: Simplify right side
    383,359.51x = 111,777,509,698.90
  5. Step 5: Solve for x
    x = 111,777,509,698.90/383,359.51
  6. Step 6: Final answer
    x = 291,573.59

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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.