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Finding the Fourth Proportional to 131,992.84, 182,153.71 and 74,640.75

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Solution

The fourth proportional to 131,992.84, 182,153.71 and 74,640.75 is: 103,006.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,992.84 : 182,153.71 = 74,640.75 : x
  2. Step 2: Convert to fraction form
    131,992.84/182,153.71 = 74,640.75/x
  3. Step 3: Cross multiply
    131,992.84x = 182,153.71 × 74,640.75
  4. Step 4: Simplify right side
    131,992.84x = 13,596,089,529.68
  5. Step 5: Solve for x
    x = 13,596,089,529.68/131,992.84
  6. Step 6: Final answer
    x = 103,006.27

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1.5x scale

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.