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Finding the Fourth Proportional to 19,505.80, 26,918.01 and 10,553.30

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Solution

The fourth proportional to 19,505.80, 26,918.01 and 10,553.30 is: 14,563.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,505.80 : 26,918.01 = 10,553.30 : x
  2. Step 2: Convert to fraction form
    19,505.80/26,918.01 = 10,553.30/x
  3. Step 3: Cross multiply
    19,505.80x = 26,918.01 × 10,553.30
  4. Step 4: Simplify right side
    19,505.80x = 284,073,834.93
  5. Step 5: Solve for x
    x = 284,073,834.93/19,505.80
  6. Step 6: Final answer
    x = 14,563.56

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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.