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Finding the Fourth Proportional to 14,605.61, 21,917.73 and 5,245.43

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Solution

The fourth proportional to 14,605.61, 21,917.73 and 5,245.43 is: 7,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,605.61 : 21,917.73 = 5,245.43 : x
  2. Step 2: Convert to fraction form
    14,605.61/21,917.73 = 5,245.43/x
  3. Step 3: Cross multiply
    14,605.61x = 21,917.73 × 5,245.43
  4. Step 4: Simplify right side
    14,605.61x = 114,967,918.47
  5. Step 5: Solve for x
    x = 114,967,918.47/14,605.61
  6. Step 6: Final answer
    x = 7,871.49

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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.