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Finding the Fourth Proportional to 18,792.79, 25,926.67 and 12,077.48

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Solution

The fourth proportional to 18,792.79, 25,926.67 and 12,077.48 is: 16,662.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.79 : 25,926.67 = 12,077.48 : x
  2. Step 2: Convert to fraction form
    18,792.79/25,926.67 = 12,077.48/x
  3. Step 3: Cross multiply
    18,792.79x = 25,926.67 × 12,077.48
  4. Step 4: Simplify right side
    18,792.79x = 313,128,838.39
  5. Step 5: Solve for x
    x = 313,128,838.39/18,792.79
  6. Step 6: Final answer
    x = 16,662.18

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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.