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Finding the Fourth Proportional to 131,424.78, 197,134.31 and 36,652.45

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Solution

The fourth proportional to 131,424.78, 197,134.31 and 36,652.45 is: 54,977.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,424.78 : 197,134.31 = 36,652.45 : x
  2. Step 2: Convert to fraction form
    131,424.78/197,134.31 = 36,652.45/x
  3. Step 3: Cross multiply
    131,424.78x = 197,134.31 × 36,652.45
  4. Step 4: Simplify right side
    131,424.78x = 7,225,454,271.63
  5. Step 5: Solve for x
    x = 7,225,454,271.63/131,424.78
  6. Step 6: Final answer
    x = 54,977.87

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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.