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Finding the Fourth Proportional to 28,792.87, 39,720.59 and 16,848.88

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Solution

The fourth proportional to 28,792.87, 39,720.59 and 16,848.88 is: 23,243.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,792.87 : 39,720.59 = 16,848.88 : x
  2. Step 2: Convert to fraction form
    28,792.87/39,720.59 = 16,848.88/x
  3. Step 3: Cross multiply
    28,792.87x = 39,720.59 × 16,848.88
  4. Step 4: Simplify right side
    28,792.87x = 669,247,370.19
  5. Step 5: Solve for x
    x = 669,247,370.19/28,792.87
  6. Step 6: Final answer
    x = 23,243.51

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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.