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Finding the Fourth Proportional to 355,907.67, 533,908.49 and 131,425.89

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Solution

The fourth proportional to 355,907.67, 533,908.49 and 131,425.89 is: 197,156.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,907.67 : 533,908.49 = 131,425.89 : x
  2. Step 2: Convert to fraction form
    355,907.67/533,908.49 = 131,425.89/x
  3. Step 3: Cross multiply
    355,907.67x = 533,908.49 × 131,425.89
  4. Step 4: Simplify right side
    355,907.67x = 70,169,397,819.68
  5. Step 5: Solve for x
    x = 70,169,397,819.68/355,907.67
  6. Step 6: Final answer
    x = 197,156.18

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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.