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Finding the Fourth Proportional to 14,271.21, 21,408.98 and 4,913.37

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Solution

The fourth proportional to 14,271.21, 21,408.98 and 4,913.37 is: 7,370.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,271.21 : 21,408.98 = 4,913.37 : x
  2. Step 2: Convert to fraction form
    14,271.21/21,408.98 = 4,913.37/x
  3. Step 3: Cross multiply
    14,271.21x = 21,408.98 × 4,913.37
  4. Step 4: Simplify right side
    14,271.21x = 105,190,215.50
  5. Step 5: Solve for x
    x = 105,190,215.50/14,271.21
  6. Step 6: Final answer
    x = 7,370.80

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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.