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Finding the Fourth Proportional to 18,448.56, 25,458.30 and 10,065.06

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Solution

The fourth proportional to 18,448.56, 25,458.30 and 10,065.06 is: 13,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,448.56 : 25,458.30 = 10,065.06 : x
  2. Step 2: Convert to fraction form
    18,448.56/25,458.30 = 10,065.06/x
  3. Step 3: Cross multiply
    18,448.56x = 25,458.30 × 10,065.06
  4. Step 4: Simplify right side
    18,448.56x = 256,239,317.00
  5. Step 5: Solve for x
    x = 256,239,317.00/18,448.56
  6. Step 6: Final answer
    x = 13,889.39

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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.