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Finding the Fourth Proportional to 19,200.70, 28,798.62 and 8,101.81

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Solution

The fourth proportional to 19,200.70, 28,798.62 and 8,101.81 is: 12,151.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200.70 : 28,798.62 = 8,101.81 : x
  2. Step 2: Convert to fraction form
    19,200.70/28,798.62 = 8,101.81/x
  3. Step 3: Cross multiply
    19,200.70x = 28,798.62 × 8,101.81
  4. Step 4: Simplify right side
    19,200.70x = 233,320,947.50
  5. Step 5: Solve for x
    x = 233,320,947.50/19,200.70
  6. Step 6: Final answer
    x = 12,151.69

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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.