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Finding the Fourth Proportional to 19,983.99, 30,010.01 and 19,148.07

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Solution

The fourth proportional to 19,983.99, 30,010.01 and 19,148.07 is: 28,754.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,983.99 : 30,010.01 = 19,148.07 : x
  2. Step 2: Convert to fraction form
    19,983.99/30,010.01 = 19,148.07/x
  3. Step 3: Cross multiply
    19,983.99x = 30,010.01 × 19,148.07
  4. Step 4: Simplify right side
    19,983.99x = 574,633,676.44
  5. Step 5: Solve for x
    x = 574,633,676.44/19,983.99
  6. Step 6: Final answer
    x = 28,754.70

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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.