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Finding the Fourth Proportional to 405,964.40, 608,946.60 and 384,191.60

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Solution

The fourth proportional to 405,964.40, 608,946.60 and 384,191.60 is: 576,287.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,964.40 : 608,946.60 = 384,191.60 : x
  2. Step 2: Convert to fraction form
    405,964.40/608,946.60 = 384,191.60/x
  3. Step 3: Cross multiply
    405,964.40x = 608,946.60 × 384,191.60
  4. Step 4: Simplify right side
    405,964.40x = 233,952,168,568.56
  5. Step 5: Solve for x
    x = 233,952,168,568.56/405,964.40
  6. Step 6: Final answer
    x = 576,287.40

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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.