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Finding the Fourth Proportional to 19,155.69, 28,708.02 and 7,462.53

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Solution

The fourth proportional to 19,155.69, 28,708.02 and 7,462.53 is: 11,183.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,155.69 : 28,708.02 = 7,462.53 : x
  2. Step 2: Convert to fraction form
    19,155.69/28,708.02 = 7,462.53/x
  3. Step 3: Cross multiply
    19,155.69x = 28,708.02 × 7,462.53
  4. Step 4: Simplify right side
    19,155.69x = 214,234,460.49
  5. Step 5: Solve for x
    x = 214,234,460.49/19,155.69
  6. Step 6: Final answer
    x = 11,183.86

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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.