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Finding the Fourth Proportional to 5,805.78, 8,729.68 and 5,349.07

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Solution

The fourth proportional to 5,805.78, 8,729.68 and 5,349.07 is: 8,042.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,805.78 : 8,729.68 = 5,349.07 : x
  2. Step 2: Convert to fraction form
    5,805.78/8,729.68 = 5,349.07/x
  3. Step 3: Cross multiply
    5,805.78x = 8,729.68 × 5,349.07
  4. Step 4: Simplify right side
    5,805.78x = 46,695,669.40
  5. Step 5: Solve for x
    x = 46,695,669.40/5,805.78
  6. Step 6: Final answer
    x = 8,042.96

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1.5x scale

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.