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Finding the Fourth Proportional to 101,435.49, 139,991.44 and 58,416.39

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Solution

The fourth proportional to 101,435.49, 139,991.44 and 58,416.39 is: 80,620.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,435.49 : 139,991.44 = 58,416.39 : x
  2. Step 2: Convert to fraction form
    101,435.49/139,991.44 = 58,416.39/x
  3. Step 3: Cross multiply
    101,435.49x = 139,991.44 × 58,416.39
  4. Step 4: Simplify right side
    101,435.49x = 8,177,794,519.19
  5. Step 5: Solve for x
    x = 8,177,794,519.19/101,435.49
  6. Step 6: Final answer
    x = 80,620.64

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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.