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Finding the Fourth Proportional to 39,002.99, 53,824.11 and 21,097.97

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Solution

The fourth proportional to 39,002.99, 53,824.11 and 21,097.97 is: 29,115.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,002.99 : 53,824.11 = 21,097.97 : x
  2. Step 2: Convert to fraction form
    39,002.99/53,824.11 = 21,097.97/x
  3. Step 3: Cross multiply
    39,002.99x = 53,824.11 × 21,097.97
  4. Step 4: Simplify right side
    39,002.99x = 1,135,579,458.06
  5. Step 5: Solve for x
    x = 1,135,579,458.06/39,002.99
  6. Step 6: Final answer
    x = 29,115.19

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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.