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Finding the Fourth Proportional to 340,892.23, 470,447.30 and 189,990.31

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Solution

The fourth proportional to 340,892.23, 470,447.30 and 189,990.31 is: 262,195.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,892.23 : 470,447.30 = 189,990.31 : x
  2. Step 2: Convert to fraction form
    340,892.23/470,447.30 = 189,990.31/x
  3. Step 3: Cross multiply
    340,892.23x = 470,447.30 × 189,990.31
  4. Step 4: Simplify right side
    340,892.23x = 89,380,427,415.71
  5. Step 5: Solve for x
    x = 89,380,427,415.71/340,892.23
  6. Step 6: Final answer
    x = 262,195.55

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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.