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Finding the Fourth Proportional to 269,430.80, 404,113.80 and 111,642.80

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Solution

The fourth proportional to 269,430.80, 404,113.80 and 111,642.80 is: 167,450.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,430.80 : 404,113.80 = 111,642.80 : x
  2. Step 2: Convert to fraction form
    269,430.80/404,113.80 = 111,642.80/x
  3. Step 3: Cross multiply
    269,430.80x = 404,113.80 × 111,642.80
  4. Step 4: Simplify right side
    269,430.80x = 45,116,396,150.64
  5. Step 5: Solve for x
    x = 45,116,396,150.64/269,430.80
  6. Step 6: Final answer
    x = 167,450.77

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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.