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Finding the Fourth Proportional to 405,744.40, 608,616.60 and 106,224.40

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Solution

The fourth proportional to 405,744.40, 608,616.60 and 106,224.40 is: 159,336.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,744.40 : 608,616.60 = 106,224.40 : x
  2. Step 2: Convert to fraction form
    405,744.40/608,616.60 = 106,224.40/x
  3. Step 3: Cross multiply
    405,744.40x = 608,616.60 × 106,224.40
  4. Step 4: Simplify right side
    405,744.40x = 64,649,933,165.04
  5. Step 5: Solve for x
    x = 64,649,933,165.04/405,744.40
  6. Step 6: Final answer
    x = 159,336.60

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1.5x scale

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.