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Finding the Fourth Proportional to 235,449.56, 324,911.44 and 128,019.68

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Solution

The fourth proportional to 235,449.56, 324,911.44 and 128,019.68 is: 176,662.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,449.56 : 324,911.44 = 128,019.68 : x
  2. Step 2: Convert to fraction form
    235,449.56/324,911.44 = 128,019.68/x
  3. Step 3: Cross multiply
    235,449.56x = 324,911.44 × 128,019.68
  4. Step 4: Simplify right side
    235,449.56x = 41,595,058,577.14
  5. Step 5: Solve for x
    x = 41,595,058,577.14/235,449.56
  6. Step 6: Final answer
    x = 176,662.29

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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.