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Finding the Fourth Proportional to 19,307.99, 28,963.26 and 7,629.41

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Solution

The fourth proportional to 19,307.99, 28,963.26 and 7,629.41 is: 11,444.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,307.99 : 28,963.26 = 7,629.41 : x
  2. Step 2: Convert to fraction form
    19,307.99/28,963.26 = 7,629.41/x
  3. Step 3: Cross multiply
    19,307.99x = 28,963.26 × 7,629.41
  4. Step 4: Simplify right side
    19,307.99x = 220,972,440.66
  5. Step 5: Solve for x
    x = 220,972,440.66/19,307.99
  6. Step 6: Final answer
    x = 11,444.61

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1.5x scale

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.