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Finding the Fourth Proportional to 218,797.32, 328,251.39 and 61,025.74

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Solution

The fourth proportional to 218,797.32, 328,251.39 and 61,025.74 is: 91,554.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,797.32 : 328,251.39 = 61,025.74 : x
  2. Step 2: Convert to fraction form
    218,797.32/328,251.39 = 61,025.74/x
  3. Step 3: Cross multiply
    218,797.32x = 328,251.39 × 61,025.74
  4. Step 4: Simplify right side
    218,797.32x = 20,031,783,980.78
  5. Step 5: Solve for x
    x = 20,031,783,980.78/218,797.32
  6. Step 6: Final answer
    x = 91,554.06

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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.