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Finding the Fourth Proportional to 383,574.36, 529,335.40 and 211,498.80

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Solution

The fourth proportional to 383,574.36, 529,335.40 and 211,498.80 is: 291,869.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,574.36 : 529,335.40 = 211,498.80 : x
  2. Step 2: Convert to fraction form
    383,574.36/529,335.40 = 211,498.80/x
  3. Step 3: Cross multiply
    383,574.36x = 529,335.40 × 211,498.80
  4. Step 4: Simplify right side
    383,574.36x = 111,953,801,897.52
  5. Step 5: Solve for x
    x = 111,953,801,897.52/383,574.36
  6. Step 6: Final answer
    x = 291,869.88

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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.