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Finding the Fourth Proportional to 19,236.63, 28,859.20 and 5,911.48

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Solution

The fourth proportional to 19,236.63, 28,859.20 and 5,911.48 is: 8,868.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,236.63 : 28,859.20 = 5,911.48 : x
  2. Step 2: Convert to fraction form
    19,236.63/28,859.20 = 5,911.48/x
  3. Step 3: Cross multiply
    19,236.63x = 28,859.20 × 5,911.48
  4. Step 4: Simplify right side
    19,236.63x = 170,600,409.76
  5. Step 5: Solve for x
    x = 170,600,409.76/19,236.63
  6. Step 6: Final answer
    x = 8,868.52

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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.