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Finding the Fourth Proportional to 605,406.40, 907,896.90 and 178,828.40

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Solution

The fourth proportional to 605,406.40, 907,896.90 and 178,828.40 is: 268,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,406.40 : 907,896.90 = 178,828.40 : x
  2. Step 2: Convert to fraction form
    605,406.40/907,896.90 = 178,828.40/x
  3. Step 3: Cross multiply
    605,406.40x = 907,896.90 × 178,828.40
  4. Step 4: Simplify right side
    605,406.40x = 162,357,749,991.96
  5. Step 5: Solve for x
    x = 162,357,749,991.96/605,406.40
  6. Step 6: Final answer
    x = 268,179.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.