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Finding the Fourth Proportional to 14,606.68, 21,913.68 and 4,218.43

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Solution

The fourth proportional to 14,606.68, 21,913.68 and 4,218.43 is: 6,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,606.68 : 21,913.68 = 4,218.43 : x
  2. Step 2: Convert to fraction form
    14,606.68/21,913.68 = 4,218.43/x
  3. Step 3: Cross multiply
    14,606.68x = 21,913.68 × 4,218.43
  4. Step 4: Simplify right side
    14,606.68x = 92,441,325.12
  5. Step 5: Solve for x
    x = 92,441,325.12/14,606.68
  6. Step 6: Final answer
    x = 6,328.70

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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.