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Finding the Fourth Proportional to 13,735.99, 18,955.67 and 7,448.37

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Solution

The fourth proportional to 13,735.99, 18,955.67 and 7,448.37 is: 10,278.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,735.99 : 18,955.67 = 7,448.37 : x
  2. Step 2: Convert to fraction form
    13,735.99/18,955.67 = 7,448.37/x
  3. Step 3: Cross multiply
    13,735.99x = 18,955.67 × 7,448.37
  4. Step 4: Simplify right side
    13,735.99x = 141,188,784.63
  5. Step 5: Solve for x
    x = 141,188,784.63/13,735.99
  6. Step 6: Final answer
    x = 10,278.75

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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.