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Finding the Fourth Proportional to 19,485.98, 29,218.56 and 10,116.56

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Solution

The fourth proportional to 19,485.98, 29,218.56 and 10,116.56 is: 15,169.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485.98 : 29,218.56 = 10,116.56 : x
  2. Step 2: Convert to fraction form
    19,485.98/29,218.56 = 10,116.56/x
  3. Step 3: Cross multiply
    19,485.98x = 29,218.56 × 10,116.56
  4. Step 4: Simplify right side
    19,485.98x = 295,591,315.35
  5. Step 5: Solve for x
    x = 295,591,315.35/19,485.98
  6. Step 6: Final answer
    x = 15,169.44

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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.