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Finding the Fourth Proportional to 219,763.13, 329,535.65 and 69,983.90

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Solution

The fourth proportional to 219,763.13, 329,535.65 and 69,983.90 is: 104,941.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,763.13 : 329,535.65 = 69,983.90 : x
  2. Step 2: Convert to fraction form
    219,763.13/329,535.65 = 69,983.90/x
  3. Step 3: Cross multiply
    219,763.13x = 329,535.65 × 69,983.90
  4. Step 4: Simplify right side
    219,763.13x = 23,062,189,976.04
  5. Step 5: Solve for x
    x = 23,062,189,976.04/219,763.13
  6. Step 6: Final answer
    x = 104,941.12

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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.