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Finding the Fourth Proportional to 14,442.66, 21,661.26 and 7,039.68

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Solution

The fourth proportional to 14,442.66, 21,661.26 and 7,039.68 is: 10,558.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,442.66 : 21,661.26 = 7,039.68 : x
  2. Step 2: Convert to fraction form
    14,442.66/21,661.26 = 7,039.68/x
  3. Step 3: Cross multiply
    14,442.66x = 21,661.26 × 7,039.68
  4. Step 4: Simplify right side
    14,442.66x = 152,488,338.80
  5. Step 5: Solve for x
    x = 152,488,338.80/14,442.66
  6. Step 6: Final answer
    x = 10,558.19

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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.