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Finding the Fourth Proportional to 19,765.56, 29,653.20 and 13,933.56

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Solution

The fourth proportional to 19,765.56, 29,653.20 and 13,933.56 is: 20,903.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,765.56 : 29,653.20 = 13,933.56 : x
  2. Step 2: Convert to fraction form
    19,765.56/29,653.20 = 13,933.56/x
  3. Step 3: Cross multiply
    19,765.56x = 29,653.20 × 13,933.56
  4. Step 4: Simplify right side
    19,765.56x = 413,174,641.39
  5. Step 5: Solve for x
    x = 413,174,641.39/19,765.56
  6. Step 6: Final answer
    x = 20,903.77

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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.