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Finding the Fourth Proportional to 19,068, 28,568.64 and 13,228.32

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Solution

The fourth proportional to 19,068, 28,568.64 and 13,228.32 is: 19,819.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,068 : 28,568.64 = 13,228.32 : x
  2. Step 2: Convert to fraction form
    19,068/28,568.64 = 13,228.32/x
  3. Step 3: Cross multiply
    19,068x = 28,568.64 × 13,228.32
  4. Step 4: Simplify right side
    19,068x = 377,915,111.88
  5. Step 5: Solve for x
    x = 377,915,111.88/19,068
  6. Step 6: Final answer
    x = 19,819.34

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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.