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Finding the Fourth Proportional to 139,003.44, 191,825.44 and 75,340.68

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Solution

The fourth proportional to 139,003.44, 191,825.44 and 75,340.68 is: 103,970.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,003.44 : 191,825.44 = 75,340.68 : x
  2. Step 2: Convert to fraction form
    139,003.44/191,825.44 = 75,340.68/x
  3. Step 3: Cross multiply
    139,003.44x = 191,825.44 × 75,340.68
  4. Step 4: Simplify right side
    139,003.44x = 14,452,259,090.90
  5. Step 5: Solve for x
    x = 14,452,259,090.90/139,003.44
  6. Step 6: Final answer
    x = 103,970.51

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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.