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Finding the Fourth Proportional to 165,958.56, 229,025.68 and 90,507.68

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Solution

The fourth proportional to 165,958.56, 229,025.68 and 90,507.68 is: 124,902.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,958.56 : 229,025.68 = 90,507.68 : x
  2. Step 2: Convert to fraction form
    165,958.56/229,025.68 = 90,507.68/x
  3. Step 3: Cross multiply
    165,958.56x = 229,025.68 × 90,507.68
  4. Step 4: Simplify right side
    165,958.56x = 20,728,582,957.22
  5. Step 5: Solve for x
    x = 20,728,582,957.22/165,958.56
  6. Step 6: Final answer
    x = 124,902.16

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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.