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Finding the Fourth Proportional to 19,029.96, 28,545.12 and 8,500.51

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Solution

The fourth proportional to 19,029.96, 28,545.12 and 8,500.51 is: 12,750.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,029.96 : 28,545.12 = 8,500.51 : x
  2. Step 2: Convert to fraction form
    19,029.96/28,545.12 = 8,500.51/x
  3. Step 3: Cross multiply
    19,029.96x = 28,545.12 × 8,500.51
  4. Step 4: Simplify right side
    19,029.96x = 242,648,078.01
  5. Step 5: Solve for x
    x = 242,648,078.01/19,029.96
  6. Step 6: Final answer
    x = 12,750.85

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1.5x scale

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.