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Finding the Fourth Proportional to 18,409.52, 25,405.80 and 10,852.40

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Solution

The fourth proportional to 18,409.52, 25,405.80 and 10,852.40 is: 14,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.52 : 25,405.80 = 10,852.40 : x
  2. Step 2: Convert to fraction form
    18,409.52/25,405.80 = 10,852.40/x
  3. Step 3: Cross multiply
    18,409.52x = 25,405.80 × 10,852.40
  4. Step 4: Simplify right side
    18,409.52x = 275,713,903.92
  5. Step 5: Solve for x
    x = 275,713,903.92/18,409.52
  6. Step 6: Final answer
    x = 14,976.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.