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Finding the Fourth Proportional to 14,042.69, 19,379.42 and 7,755.06

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Solution

The fourth proportional to 14,042.69, 19,379.42 and 7,755.06 is: 10,702.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,042.69 : 19,379.42 = 7,755.06 : x
  2. Step 2: Convert to fraction form
    14,042.69/19,379.42 = 7,755.06/x
  3. Step 3: Cross multiply
    14,042.69x = 19,379.42 × 7,755.06
  4. Step 4: Simplify right side
    14,042.69x = 150,288,564.87
  5. Step 5: Solve for x
    x = 150,288,564.87/14,042.69
  6. Step 6: Final answer
    x = 10,702.26

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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.