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Finding the Fourth Proportional to 405,315.80, 608,039.04 and 124,832.96

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Solution

The fourth proportional to 405,315.80, 608,039.04 and 124,832.96 is: 187,269.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,315.80 : 608,039.04 = 124,832.96 : x
  2. Step 2: Convert to fraction form
    405,315.80/608,039.04 = 124,832.96/x
  3. Step 3: Cross multiply
    405,315.80x = 608,039.04 × 124,832.96
  4. Step 4: Simplify right side
    405,315.80x = 75,903,313,158.76
  5. Step 5: Solve for x
    x = 75,903,313,158.76/405,315.80
  6. Step 6: Final answer
    x = 187,269.56

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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.