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Finding the Fourth Proportional to 28,792.56, 39,733.84 and 16,695.40

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Solution

The fourth proportional to 28,792.56, 39,733.84 and 16,695.40 is: 23,039.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,792.56 : 39,733.84 = 16,695.40 : x
  2. Step 2: Convert to fraction form
    28,792.56/39,733.84 = 16,695.40/x
  3. Step 3: Cross multiply
    28,792.56x = 39,733.84 × 16,695.40
  4. Step 4: Simplify right side
    28,792.56x = 663,372,352.34
  5. Step 5: Solve for x
    x = 663,372,352.34/28,792.56
  6. Step 6: Final answer
    x = 23,039.71

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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.