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Finding the Fourth Proportional to 18,113.63, 24,975.74 and 16,992.79

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Solution

The fourth proportional to 18,113.63, 24,975.74 and 16,992.79 is: 23,430.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.63 : 24,975.74 = 16,992.79 : x
  2. Step 2: Convert to fraction form
    18,113.63/24,975.74 = 16,992.79/x
  3. Step 3: Cross multiply
    18,113.63x = 24,975.74 × 16,992.79
  4. Step 4: Simplify right side
    18,113.63x = 424,407,484.96
  5. Step 5: Solve for x
    x = 424,407,484.96/18,113.63
  6. Step 6: Final answer
    x = 23,430.29

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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.