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Finding the Fourth Proportional to 19,048.56, 28,582.56 and 8,658.96

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Solution

The fourth proportional to 19,048.56, 28,582.56 and 8,658.96 is: 12,992.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,048.56 : 28,582.56 = 8,658.96 : x
  2. Step 2: Convert to fraction form
    19,048.56/28,582.56 = 8,658.96/x
  3. Step 3: Cross multiply
    19,048.56x = 28,582.56 × 8,658.96
  4. Step 4: Simplify right side
    19,048.56x = 247,495,243.74
  5. Step 5: Solve for x
    x = 247,495,243.74/19,048.56
  6. Step 6: Final answer
    x = 12,992.86

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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.