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Finding the Fourth Proportional to 223,647.81, 335,356.79 and 65,855.76

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Solution

The fourth proportional to 223,647.81, 335,356.79 and 65,855.76 is: 98,749.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,647.81 : 335,356.79 = 65,855.76 : x
  2. Step 2: Convert to fraction form
    223,647.81/335,356.79 = 65,855.76/x
  3. Step 3: Cross multiply
    223,647.81x = 335,356.79 × 65,855.76
  4. Step 4: Simplify right side
    223,647.81x = 22,085,175,060.18
  5. Step 5: Solve for x
    x = 22,085,175,060.18/223,647.81
  6. Step 6: Final answer
    x = 98,749.80

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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.