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Finding the Fourth Proportional to 18,910.83, 28,370.81 and 5,762.41

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Solution

The fourth proportional to 18,910.83, 28,370.81 and 5,762.41 is: 8,645.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.83 : 28,370.81 = 5,762.41 : x
  2. Step 2: Convert to fraction form
    18,910.83/28,370.81 = 5,762.41/x
  3. Step 3: Cross multiply
    18,910.83x = 28,370.81 × 5,762.41
  4. Step 4: Simplify right side
    18,910.83x = 163,484,150.32
  5. Step 5: Solve for x
    x = 163,484,150.32/18,910.83
  6. Step 6: Final answer
    x = 8,645.00

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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.