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Finding the Fourth Proportional to 18,738.25, 25,858.79 and 10,356.01

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Solution

The fourth proportional to 18,738.25, 25,858.79 and 10,356.01 is: 14,291.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.25 : 25,858.79 = 10,356.01 : x
  2. Step 2: Convert to fraction form
    18,738.25/25,858.79 = 10,356.01/x
  3. Step 3: Cross multiply
    18,738.25x = 25,858.79 × 10,356.01
  4. Step 4: Simplify right side
    18,738.25x = 267,793,887.83
  5. Step 5: Solve for x
    x = 267,793,887.83/18,738.25
  6. Step 6: Final answer
    x = 14,291.30

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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.