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Finding the Fourth Proportional to 383,636.58, 529,406.33 and 211,561.80

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Solution

The fourth proportional to 383,636.58, 529,406.33 and 211,561.80 is: 291,948.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,636.58 : 529,406.33 = 211,561.80 : x
  2. Step 2: Convert to fraction form
    383,636.58/529,406.33 = 211,561.80/x
  3. Step 3: Cross multiply
    383,636.58x = 529,406.33 × 211,561.80
  4. Step 4: Simplify right side
    383,636.58x = 112,002,155,048.39
  5. Step 5: Solve for x
    x = 112,002,155,048.39/383,636.58
  6. Step 6: Final answer
    x = 291,948.58

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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.