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Finding the Fourth Proportional to 14,661.99, 20,233.42 and 7,947.45

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Solution

The fourth proportional to 14,661.99, 20,233.42 and 7,947.45 is: 10,967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,661.99 : 20,233.42 = 7,947.45 : x
  2. Step 2: Convert to fraction form
    14,661.99/20,233.42 = 7,947.45/x
  3. Step 3: Cross multiply
    14,661.99x = 20,233.42 × 7,947.45
  4. Step 4: Simplify right side
    14,661.99x = 160,804,073.91
  5. Step 5: Solve for x
    x = 160,804,073.91/14,661.99
  6. Step 6: Final answer
    x = 10,967.41

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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.