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Finding the Fourth Proportional to 14,070.99, 19,418.43 and 8,021.13

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Solution

The fourth proportional to 14,070.99, 19,418.43 and 8,021.13 is: 11,069.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,070.99 : 19,418.43 = 8,021.13 : x
  2. Step 2: Convert to fraction form
    14,070.99/19,418.43 = 8,021.13/x
  3. Step 3: Cross multiply
    14,070.99x = 19,418.43 × 8,021.13
  4. Step 4: Simplify right side
    14,070.99x = 155,757,708.69
  5. Step 5: Solve for x
    x = 155,757,708.69/14,070.99
  6. Step 6: Final answer
    x = 11,069.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.