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Finding the Fourth Proportional to 121,977, 182,799.12 and 74,608.56

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Solution

The fourth proportional to 121,977, 182,799.12 and 74,608.56 is: 111,811.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,977 : 182,799.12 = 74,608.56 : x
  2. Step 2: Convert to fraction form
    121,977/182,799.12 = 74,608.56/x
  3. Step 3: Cross multiply
    121,977x = 182,799.12 × 74,608.56
  4. Step 4: Simplify right side
    121,977x = 13,638,379,112.47
  5. Step 5: Solve for x
    x = 13,638,379,112.47/121,977
  6. Step 6: Final answer
    x = 111,811.07

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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.