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Finding the Fourth Proportional to 219,101.58, 328,660.59 and 61,325.94

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Solution

The fourth proportional to 219,101.58, 328,660.59 and 61,325.94 is: 91,991.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,101.58 : 328,660.59 = 61,325.94 : x
  2. Step 2: Convert to fraction form
    219,101.58/328,660.59 = 61,325.94/x
  3. Step 3: Cross multiply
    219,101.58x = 328,660.59 × 61,325.94
  4. Step 4: Simplify right side
    219,101.58x = 20,155,419,622.70
  5. Step 5: Solve for x
    x = 20,155,419,622.70/219,101.58
  6. Step 6: Final answer
    x = 91,991.21

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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.