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Finding the Fourth Proportional to 28,694.49, 39,594.87 and 16,749.15

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Solution

The fourth proportional to 28,694.49, 39,594.87 and 16,749.15 is: 23,111.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,694.49 : 39,594.87 = 16,749.15 : x
  2. Step 2: Convert to fraction form
    28,694.49/39,594.87 = 16,749.15/x
  3. Step 3: Cross multiply
    28,694.49x = 39,594.87 × 16,749.15
  4. Step 4: Simplify right side
    28,694.49x = 663,180,416.86
  5. Step 5: Solve for x
    x = 663,180,416.86/28,694.49
  6. Step 6: Final answer
    x = 23,111.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.