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Finding the Fourth Proportional to 212,647.58, 293,496.16 and 122,064.77

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Solution

The fourth proportional to 212,647.58, 293,496.16 and 122,064.77 is: 168,473.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,647.58 : 293,496.16 = 122,064.77 : x
  2. Step 2: Convert to fraction form
    212,647.58/293,496.16 = 122,064.77/x
  3. Step 3: Cross multiply
    212,647.58x = 293,496.16 × 122,064.77
  4. Step 4: Simplify right side
    212,647.58x = 35,825,541,923.73
  5. Step 5: Solve for x
    x = 35,825,541,923.73/212,647.58
  6. Step 6: Final answer
    x = 168,473.78

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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.