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Finding the Fourth Proportional to 15,059.99, 20,792.54 and 9,684.86

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Solution

The fourth proportional to 15,059.99, 20,792.54 and 9,684.86 is: 13,371.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.99 : 20,792.54 = 9,684.86 : x
  2. Step 2: Convert to fraction form
    15,059.99/20,792.54 = 9,684.86/x
  3. Step 3: Cross multiply
    15,059.99x = 20,792.54 × 9,684.86
  4. Step 4: Simplify right side
    15,059.99x = 201,372,759.19
  5. Step 5: Solve for x
    x = 201,372,759.19/15,059.99
  6. Step 6: Final answer
    x = 13,371.37

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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.