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Finding the Fourth Proportional to 28,469.30, 42,603.15 and 24,811.70

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Solution

The fourth proportional to 28,469.30, 42,603.15 and 24,811.70 is: 37,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.30 : 42,603.15 = 24,811.70 : x
  2. Step 2: Convert to fraction form
    28,469.30/42,603.15 = 24,811.70/x
  3. Step 3: Cross multiply
    28,469.30x = 42,603.15 × 24,811.70
  4. Step 4: Simplify right side
    28,469.30x = 1,057,056,576.86
  5. Step 5: Solve for x
    x = 1,057,056,576.86/28,469.30
  6. Step 6: Final answer
    x = 37,129.70

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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.