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Finding the Fourth Proportional to 343,648.37, 474,211.96 and 190,676.86

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Solution

The fourth proportional to 343,648.37, 474,211.96 and 190,676.86 is: 263,121.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,648.37 : 474,211.96 = 190,676.86 : x
  2. Step 2: Convert to fraction form
    343,648.37/474,211.96 = 190,676.86/x
  3. Step 3: Cross multiply
    343,648.37x = 474,211.96 × 190,676.86
  4. Step 4: Simplify right side
    343,648.37x = 90,421,248,692.78
  5. Step 5: Solve for x
    x = 90,421,248,692.78/343,648.37
  6. Step 6: Final answer
    x = 263,121.42

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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.