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Finding the Fourth Proportional to 218,843.07, 328,299.60 and 92,484.54

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Solution

The fourth proportional to 218,843.07, 328,299.60 and 92,484.54 is: 138,741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,843.07 : 328,299.60 = 92,484.54 : x
  2. Step 2: Convert to fraction form
    218,843.07/328,299.60 = 92,484.54/x
  3. Step 3: Cross multiply
    218,843.07x = 328,299.60 × 92,484.54
  4. Step 4: Simplify right side
    218,843.07x = 30,362,637,488.18
  5. Step 5: Solve for x
    x = 30,362,637,488.18/218,843.07
  6. Step 6: Final answer
    x = 138,741.60

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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.