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Finding the Fourth Proportional to 19,053.60, 28,559.94 and 7,951.92

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Solution

The fourth proportional to 19,053.60, 28,559.94 and 7,951.92 is: 11,919.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,053.60 : 28,559.94 = 7,951.92 : x
  2. Step 2: Convert to fraction form
    19,053.60/28,559.94 = 7,951.92/x
  3. Step 3: Cross multiply
    19,053.60x = 28,559.94 × 7,951.92
  4. Step 4: Simplify right side
    19,053.60x = 227,106,358.08
  5. Step 5: Solve for x
    x = 227,106,358.08/19,053.60
  6. Step 6: Final answer
    x = 11,919.34

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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.