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Finding the Fourth Proportional to 219,328.08, 329,009.34 and 69,576.90

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Solution

The fourth proportional to 219,328.08, 329,009.34 and 69,576.90 is: 104,370.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,328.08 : 329,009.34 = 69,576.90 : x
  2. Step 2: Convert to fraction form
    219,328.08/329,009.34 = 69,576.90/x
  3. Step 3: Cross multiply
    219,328.08x = 329,009.34 × 69,576.90
  4. Step 4: Simplify right side
    219,328.08x = 22,891,449,948.25
  5. Step 5: Solve for x
    x = 22,891,449,948.25/219,328.08
  6. Step 6: Final answer
    x = 104,370.81

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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.