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Finding the Fourth Proportional to 131,243.70, 196,865.55 and 124,331.70

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Solution

The fourth proportional to 131,243.70, 196,865.55 and 124,331.70 is: 186,497.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,243.70 : 196,865.55 = 124,331.70 : x
  2. Step 2: Convert to fraction form
    131,243.70/196,865.55 = 124,331.70/x
  3. Step 3: Cross multiply
    131,243.70x = 196,865.55 × 124,331.70
  4. Step 4: Simplify right side
    131,243.70x = 24,476,628,502.94
  5. Step 5: Solve for x
    x = 24,476,628,502.94/131,243.70
  6. Step 6: Final answer
    x = 186,497.55

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1.5x scale

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.