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Finding the Fourth Proportional to 219,403.64, 329,118.21 and 61,644.41

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Solution

The fourth proportional to 219,403.64, 329,118.21 and 61,644.41 is: 92,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,403.64 : 329,118.21 = 61,644.41 : x
  2. Step 2: Convert to fraction form
    219,403.64/329,118.21 = 61,644.41/x
  3. Step 3: Cross multiply
    219,403.64x = 329,118.21 × 61,644.41
  4. Step 4: Simplify right side
    219,403.64x = 20,288,297,875.71
  5. Step 5: Solve for x
    x = 20,288,297,875.71/219,403.64
  6. Step 6: Final answer
    x = 92,470.20

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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.