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Finding the Fourth Proportional to 18,597.48, 25,651.79 and 11,880.13

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Solution

The fourth proportional to 18,597.48, 25,651.79 and 11,880.13 is: 16,386.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.48 : 25,651.79 = 11,880.13 : x
  2. Step 2: Convert to fraction form
    18,597.48/25,651.79 = 11,880.13/x
  3. Step 3: Cross multiply
    18,597.48x = 25,651.79 × 11,880.13
  4. Step 4: Simplify right side
    18,597.48x = 304,746,496.90
  5. Step 5: Solve for x
    x = 304,746,496.90/18,597.48
  6. Step 6: Final answer
    x = 16,386.44

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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.