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Finding the Fourth Proportional to 19,228.95, 28,843.65 and 6,749.28

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Solution

The fourth proportional to 19,228.95, 28,843.65 and 6,749.28 is: 10,124.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,228.95 : 28,843.65 = 6,749.28 : x
  2. Step 2: Convert to fraction form
    19,228.95/28,843.65 = 6,749.28/x
  3. Step 3: Cross multiply
    19,228.95x = 28,843.65 × 6,749.28
  4. Step 4: Simplify right side
    19,228.95x = 194,673,870.07
  5. Step 5: Solve for x
    x = 194,673,870.07/19,228.95
  6. Step 6: Final answer
    x = 10,124.00

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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.