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Finding the Fourth Proportional to 28,298.70, 42,448.05 and 25,674.30

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Solution

The fourth proportional to 28,298.70, 42,448.05 and 25,674.30 is: 38,511.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,298.70 : 42,448.05 = 25,674.30 : x
  2. Step 2: Convert to fraction form
    28,298.70/42,448.05 = 25,674.30/x
  3. Step 3: Cross multiply
    28,298.70x = 42,448.05 × 25,674.30
  4. Step 4: Simplify right side
    28,298.70x = 1,089,823,970.12
  5. Step 5: Solve for x
    x = 1,089,823,970.12/28,298.70
  6. Step 6: Final answer
    x = 38,511.45

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