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Finding the Fourth Proportional to 27,572.99, 38,057.48 and 15,643.31

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Solution

The fourth proportional to 27,572.99, 38,057.48 and 15,643.31 is: 21,591.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,572.99 : 38,057.48 = 15,643.31 : x
  2. Step 2: Convert to fraction form
    27,572.99/38,057.48 = 15,643.31/x
  3. Step 3: Cross multiply
    27,572.99x = 38,057.48 × 15,643.31
  4. Step 4: Simplify right side
    27,572.99x = 595,344,747.62
  5. Step 5: Solve for x
    x = 595,344,747.62/27,572.99
  6. Step 6: Final answer
    x = 21,591.60

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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.