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Finding the Fourth Proportional to 18,569.86, 25,635.09 and 12,601.78

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Solution

The fourth proportional to 18,569.86, 25,635.09 and 12,601.78 is: 17,396.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,569.86 : 25,635.09 = 12,601.78 : x
  2. Step 2: Convert to fraction form
    18,569.86/25,635.09 = 12,601.78/x
  3. Step 3: Cross multiply
    18,569.86x = 25,635.09 × 12,601.78
  4. Step 4: Simplify right side
    18,569.86x = 323,047,764.46
  5. Step 5: Solve for x
    x = 323,047,764.46/18,569.86
  6. Step 6: Final answer
    x = 17,396.35

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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.