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Finding the Fourth Proportional to 27,681.99, 38,201.27 and 15,107.01

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Solution

The fourth proportional to 27,681.99, 38,201.27 and 15,107.01 is: 20,847.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,681.99 : 38,201.27 = 15,107.01 : x
  2. Step 2: Convert to fraction form
    27,681.99/38,201.27 = 15,107.01/x
  3. Step 3: Cross multiply
    27,681.99x = 38,201.27 × 15,107.01
  4. Step 4: Simplify right side
    27,681.99x = 577,106,892.37
  5. Step 5: Solve for x
    x = 577,106,892.37/27,681.99
  6. Step 6: Final answer
    x = 20,847.74

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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.