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Finding the Fourth Proportional to 18,607.41, 25,679.38 and 10,649.47

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Solution

The fourth proportional to 18,607.41, 25,679.38 and 10,649.47 is: 14,696.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.41 : 25,679.38 = 10,649.47 : x
  2. Step 2: Convert to fraction form
    18,607.41/25,679.38 = 10,649.47/x
  3. Step 3: Cross multiply
    18,607.41x = 25,679.38 × 10,649.47
  4. Step 4: Simplify right side
    18,607.41x = 273,471,696.11
  5. Step 5: Solve for x
    x = 273,471,696.11/18,607.41
  6. Step 6: Final answer
    x = 14,696.92

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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.