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Finding the Fourth Proportional to 19,254.55, 28,869.46 and 8,017.67

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Solution

The fourth proportional to 19,254.55, 28,869.46 and 8,017.67 is: 12,021.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,254.55 : 28,869.46 = 8,017.67 : x
  2. Step 2: Convert to fraction form
    19,254.55/28,869.46 = 8,017.67/x
  3. Step 3: Cross multiply
    19,254.55x = 28,869.46 × 8,017.67
  4. Step 4: Simplify right side
    19,254.55x = 231,465,638.97
  5. Step 5: Solve for x
    x = 231,465,638.97/19,254.55
  6. Step 6: Final answer
    x = 12,021.35

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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.