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Finding the Fourth Proportional to 14,042.84, 19,379.12 and 7,755.62

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Solution

The fourth proportional to 14,042.84, 19,379.12 and 7,755.62 is: 10,702.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,042.84 : 19,379.12 = 7,755.62 : x
  2. Step 2: Convert to fraction form
    14,042.84/19,379.12 = 7,755.62/x
  3. Step 3: Cross multiply
    14,042.84x = 19,379.12 × 7,755.62
  4. Step 4: Simplify right side
    14,042.84x = 150,297,090.65
  5. Step 5: Solve for x
    x = 150,297,090.65/14,042.84
  6. Step 6: Final answer
    x = 10,702.76

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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.