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Finding the Fourth Proportional to 19,013.40, 26,239.14 and 10,515.96

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Solution

The fourth proportional to 19,013.40, 26,239.14 and 10,515.96 is: 14,512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,013.40 : 26,239.14 = 10,515.96 : x
  2. Step 2: Convert to fraction form
    19,013.40/26,239.14 = 10,515.96/x
  3. Step 3: Cross multiply
    19,013.40x = 26,239.14 × 10,515.96
  4. Step 4: Simplify right side
    19,013.40x = 275,929,746.67
  5. Step 5: Solve for x
    x = 275,929,746.67/19,013.40
  6. Step 6: Final answer
    x = 14,512.38

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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.