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Finding the Fourth Proportional to 14,043.62, 19,379.22 and 7,755.50

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Solution

The fourth proportional to 14,043.62, 19,379.22 and 7,755.50 is: 10,702.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,043.62 : 19,379.22 = 7,755.50 : x
  2. Step 2: Convert to fraction form
    14,043.62/19,379.22 = 7,755.50/x
  3. Step 3: Cross multiply
    14,043.62x = 19,379.22 × 7,755.50
  4. Step 4: Simplify right side
    14,043.62x = 150,295,540.71
  5. Step 5: Solve for x
    x = 150,295,540.71/14,043.62
  6. Step 6: Final answer
    x = 10,702.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.