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Finding the Fourth Proportional to 131,465.70, 197,285.90 and 48,359.70

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Solution

The fourth proportional to 131,465.70, 197,285.90 and 48,359.70 is: 72,571.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,465.70 : 197,285.90 = 48,359.70 : x
  2. Step 2: Convert to fraction form
    131,465.70/197,285.90 = 48,359.70/x
  3. Step 3: Cross multiply
    131,465.70x = 197,285.90 × 48,359.70
  4. Step 4: Simplify right side
    131,465.70x = 9,540,686,696.43
  5. Step 5: Solve for x
    x = 9,540,686,696.43/131,465.70
  6. Step 6: Final answer
    x = 72,571.68

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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.