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Finding the Fourth Proportional to 19,819.51, 27,347.06 and 11,751.67

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Solution

The fourth proportional to 19,819.51, 27,347.06 and 11,751.67 is: 16,215.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.51 : 27,347.06 = 11,751.67 : x
  2. Step 2: Convert to fraction form
    19,819.51/27,347.06 = 11,751.67/x
  3. Step 3: Cross multiply
    19,819.51x = 27,347.06 × 11,751.67
  4. Step 4: Simplify right side
    19,819.51x = 321,373,585.60
  5. Step 5: Solve for x
    x = 321,373,585.60/19,819.51
  6. Step 6: Final answer
    x = 16,215.01

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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.