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Finding the Fourth Proportional to 351,291.78, 527,021.51 and 114,634.89

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Solution

The fourth proportional to 351,291.78, 527,021.51 and 114,634.89 is: 171,979.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,291.78 : 527,021.51 = 114,634.89 : x
  2. Step 2: Convert to fraction form
    351,291.78/527,021.51 = 114,634.89/x
  3. Step 3: Cross multiply
    351,291.78x = 527,021.51 × 114,634.89
  4. Step 4: Simplify right side
    351,291.78x = 60,415,052,253.31
  5. Step 5: Solve for x
    x = 60,415,052,253.31/351,291.78
  6. Step 6: Final answer
    x = 171,979.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.