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Finding the Fourth Proportional to 19,403.70, 29,064.03 and 11,079.30

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Solution

The fourth proportional to 19,403.70, 29,064.03 and 11,079.30 is: 16,595.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,403.70 : 29,064.03 = 11,079.30 : x
  2. Step 2: Convert to fraction form
    19,403.70/29,064.03 = 11,079.30/x
  3. Step 3: Cross multiply
    19,403.70x = 29,064.03 × 11,079.30
  4. Step 4: Simplify right side
    19,403.70x = 322,009,107.58
  5. Step 5: Solve for x
    x = 322,009,107.58/19,403.70
  6. Step 6: Final answer
    x = 16,595.24

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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.