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Finding the Fourth Proportional to 28,124.92, 42,187.38 and 7,348.24

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Solution

The fourth proportional to 28,124.92, 42,187.38 and 7,348.24 is: 11,022.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,124.92 : 42,187.38 = 7,348.24 : x
  2. Step 2: Convert to fraction form
    28,124.92/42,187.38 = 7,348.24/x
  3. Step 3: Cross multiply
    28,124.92x = 42,187.38 × 7,348.24
  4. Step 4: Simplify right side
    28,124.92x = 310,002,993.21
  5. Step 5: Solve for x
    x = 310,002,993.21/28,124.92
  6. Step 6: Final answer
    x = 11,022.36

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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.