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Finding the Fourth Proportional to 274,501.20, 411,557.40 and 105,956.40

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Solution

The fourth proportional to 274,501.20, 411,557.40 and 105,956.40 is: 158,859.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,501.20 : 411,557.40 = 105,956.40 : x
  2. Step 2: Convert to fraction form
    274,501.20/411,557.40 = 105,956.40/x
  3. Step 3: Cross multiply
    274,501.20x = 411,557.40 × 105,956.40
  4. Step 4: Simplify right side
    274,501.20x = 43,607,140,497.36
  5. Step 5: Solve for x
    x = 43,607,140,497.36/274,501.20
  6. Step 6: Final answer
    x = 158,859.56

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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.