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Finding the Fourth Proportional to 397,257.20, 596,116.20 and 147,964.40

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Solution

The fourth proportional to 397,257.20, 596,116.20 and 147,964.40 is: 222,032.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,257.20 : 596,116.20 = 147,964.40 : x
  2. Step 2: Convert to fraction form
    397,257.20/596,116.20 = 147,964.40/x
  3. Step 3: Cross multiply
    397,257.20x = 596,116.20 × 147,964.40
  4. Step 4: Simplify right side
    397,257.20x = 88,203,975,863.28
  5. Step 5: Solve for x
    x = 88,203,975,863.28/397,257.20
  6. Step 6: Final answer
    x = 222,032.42

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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.