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Finding the Fourth Proportional to 281,832.40, 389,078.40 and 191,669.68

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Solution

The fourth proportional to 281,832.40, 389,078.40 and 191,669.68 is: 264,605.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,832.40 : 389,078.40 = 191,669.68 : x
  2. Step 2: Convert to fraction form
    281,832.40/389,078.40 = 191,669.68/x
  3. Step 3: Cross multiply
    281,832.40x = 389,078.40 × 191,669.68
  4. Step 4: Simplify right side
    281,832.40x = 74,574,532,422.91
  5. Step 5: Solve for x
    x = 74,574,532,422.91/281,832.40
  6. Step 6: Final answer
    x = 264,605.96

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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.