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Finding the Fourth Proportional to 13,900.77, 19,183.01 and 7,932.51

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Solution

The fourth proportional to 13,900.77, 19,183.01 and 7,932.51 is: 10,946.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.77 : 19,183.01 = 7,932.51 : x
  2. Step 2: Convert to fraction form
    13,900.77/19,183.01 = 7,932.51/x
  3. Step 3: Cross multiply
    13,900.77x = 19,183.01 × 7,932.51
  4. Step 4: Simplify right side
    13,900.77x = 152,169,378.99
  5. Step 5: Solve for x
    x = 152,169,378.99/13,900.77
  6. Step 6: Final answer
    x = 10,946.83

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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.