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Finding the Fourth Proportional to 340,589.25, 470,027.75 and 189,686.25

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Solution

The fourth proportional to 340,589.25, 470,027.75 and 189,686.25 is: 261,775.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,589.25 : 470,027.75 = 189,686.25 : x
  2. Step 2: Convert to fraction form
    340,589.25/470,027.75 = 189,686.25/x
  3. Step 3: Cross multiply
    340,589.25x = 470,027.75 × 189,686.25
  4. Step 4: Simplify right side
    340,589.25x = 89,157,800,345.01
  5. Step 5: Solve for x
    x = 89,157,800,345.01/340,589.25
  6. Step 6: Final answer
    x = 261,775.15

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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.