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Finding the Fourth Proportional to 19,161.25, 28,747.04 and 6,681.98

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Solution

The fourth proportional to 19,161.25, 28,747.04 and 6,681.98 is: 10,024.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,161.25 : 28,747.04 = 6,681.98 : x
  2. Step 2: Convert to fraction form
    19,161.25/28,747.04 = 6,681.98/x
  3. Step 3: Cross multiply
    19,161.25x = 28,747.04 × 6,681.98
  4. Step 4: Simplify right side
    19,161.25x = 192,087,184.80
  5. Step 5: Solve for x
    x = 192,087,184.80/19,161.25
  6. Step 6: Final answer
    x = 10,024.77

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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.