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Finding the Fourth Proportional to 18,172.76, 25,074.74 and 10,617.63

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Solution

The fourth proportional to 18,172.76, 25,074.74 and 10,617.63 is: 14,650.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,172.76 : 25,074.74 = 10,617.63 : x
  2. Step 2: Convert to fraction form
    18,172.76/25,074.74 = 10,617.63/x
  3. Step 3: Cross multiply
    18,172.76x = 25,074.74 × 10,617.63
  4. Step 4: Simplify right side
    18,172.76x = 266,234,258.58
  5. Step 5: Solve for x
    x = 266,234,258.58/18,172.76
  6. Step 6: Final answer
    x = 14,650.18

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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.