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Finding the Fourth Proportional to 262,086.80, 393,227.40 and 104,428.40

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Solution

The fourth proportional to 262,086.80, 393,227.40 and 104,428.40 is: 156,681.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,086.80 : 393,227.40 = 104,428.40 : x
  2. Step 2: Convert to fraction form
    262,086.80/393,227.40 = 104,428.40/x
  3. Step 3: Cross multiply
    262,086.80x = 393,227.40 × 104,428.40
  4. Step 4: Simplify right side
    262,086.80x = 41,064,108,218.16
  5. Step 5: Solve for x
    x = 41,064,108,218.16/262,086.80
  6. Step 6: Final answer
    x = 156,681.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.