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Finding the Fourth Proportional to 18,609.94, 25,681.60 and 10,112.00

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Solution

The fourth proportional to 18,609.94, 25,681.60 and 10,112.00 is: 13,954.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.94 : 25,681.60 = 10,112.00 : x
  2. Step 2: Convert to fraction form
    18,609.94/25,681.60 = 10,112.00/x
  3. Step 3: Cross multiply
    18,609.94x = 25,681.60 × 10,112.00
  4. Step 4: Simplify right side
    18,609.94x = 259,692,185.51
  5. Step 5: Solve for x
    x = 259,692,185.51/18,609.94
  6. Step 6: Final answer
    x = 13,954.49

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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.