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Finding the Fourth Proportional to 18,672.83, 25,733.06 and 13,358.42

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Solution

The fourth proportional to 18,672.83, 25,733.06 and 13,358.42 is: 18,409.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.83 : 25,733.06 = 13,358.42 : x
  2. Step 2: Convert to fraction form
    18,672.83/25,733.06 = 13,358.42/x
  3. Step 3: Cross multiply
    18,672.83x = 25,733.06 × 13,358.42
  4. Step 4: Simplify right side
    18,672.83x = 343,752,827.91
  5. Step 5: Solve for x
    x = 343,752,827.91/18,672.83
  6. Step 6: Final answer
    x = 18,409.26

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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.