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Finding the Fourth Proportional to 383,352.78, 529,030.44 and 211,277.01

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Solution

The fourth proportional to 383,352.78, 529,030.44 and 211,277.01 is: 291,564.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,352.78 : 529,030.44 = 211,277.01 : x
  2. Step 2: Convert to fraction form
    383,352.78/529,030.44 = 211,277.01/x
  3. Step 3: Cross multiply
    383,352.78x = 529,030.44 × 211,277.01
  4. Step 4: Simplify right side
    383,352.78x = 111,771,969,562.18
  5. Step 5: Solve for x
    x = 111,771,969,562.18/383,352.78
  6. Step 6: Final answer
    x = 291,564.26

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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.