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Finding the Fourth Proportional to 19,435.40, 26,821.02 and 11,051.90

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Solution

The fourth proportional to 19,435.40, 26,821.02 and 11,051.90 is: 15,251.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,435.40 : 26,821.02 = 11,051.90 : x
  2. Step 2: Convert to fraction form
    19,435.40/26,821.02 = 11,051.90/x
  3. Step 3: Cross multiply
    19,435.40x = 26,821.02 × 11,051.90
  4. Step 4: Simplify right side
    19,435.40x = 296,423,230.94
  5. Step 5: Solve for x
    x = 296,423,230.94/19,435.40
  6. Step 6: Final answer
    x = 15,251.72

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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.