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Finding the Fourth Proportional to 18,618.50, 25,693.54 and 10,235.54

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Solution

The fourth proportional to 18,618.50, 25,693.54 and 10,235.54 is: 14,125.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.50 : 25,693.54 = 10,235.54 : x
  2. Step 2: Convert to fraction form
    18,618.50/25,693.54 = 10,235.54/x
  3. Step 3: Cross multiply
    18,618.50x = 25,693.54 × 10,235.54
  4. Step 4: Simplify right side
    18,618.50x = 262,987,256.41
  5. Step 5: Solve for x
    x = 262,987,256.41/18,618.50
  6. Step 6: Final answer
    x = 14,125.05

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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.