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Finding the Fourth Proportional to 19,025.72, 28,545.12 and 8,503.00

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Solution

The fourth proportional to 19,025.72, 28,545.12 and 8,503.00 is: 12,757.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,025.72 : 28,545.12 = 8,503.00 : x
  2. Step 2: Convert to fraction form
    19,025.72/28,545.12 = 8,503.00/x
  3. Step 3: Cross multiply
    19,025.72x = 28,545.12 × 8,503.00
  4. Step 4: Simplify right side
    19,025.72x = 242,719,084.00
  5. Step 5: Solve for x
    x = 242,719,084.00/19,025.72
  6. Step 6: Final answer
    x = 12,757.42

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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.