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Finding the Fourth Proportional to 12,898.26, 19,356.02 and 4,690.26

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Solution

The fourth proportional to 12,898.26, 19,356.02 and 4,690.26 is: 7,038.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,898.26 : 19,356.02 = 4,690.26 : x
  2. Step 2: Convert to fraction form
    12,898.26/19,356.02 = 4,690.26/x
  3. Step 3: Cross multiply
    12,898.26x = 19,356.02 × 4,690.26
  4. Step 4: Simplify right side
    12,898.26x = 90,784,766.37
  5. Step 5: Solve for x
    x = 90,784,766.37/12,898.26
  6. Step 6: Final answer
    x = 7,038.53

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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.