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Finding the Fourth Proportional to 19,213.77, 28,819.63 and 7,373.23

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Solution

The fourth proportional to 19,213.77, 28,819.63 and 7,373.23 is: 11,059.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,213.77 : 28,819.63 = 7,373.23 : x
  2. Step 2: Convert to fraction form
    19,213.77/28,819.63 = 7,373.23/x
  3. Step 3: Cross multiply
    19,213.77x = 28,819.63 × 7,373.23
  4. Step 4: Simplify right side
    19,213.77x = 212,493,697.67
  5. Step 5: Solve for x
    x = 212,493,697.67/19,213.77
  6. Step 6: Final answer
    x = 11,059.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.