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Finding the Fourth Proportional to 411,022.40, 617,455.20 and 399,963.20

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Solution

The fourth proportional to 411,022.40, 617,455.20 and 399,963.20 is: 600,841.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,022.40 : 617,455.20 = 399,963.20 : x
  2. Step 2: Convert to fraction form
    411,022.40/617,455.20 = 399,963.20/x
  3. Step 3: Cross multiply
    411,022.40x = 617,455.20 × 399,963.20
  4. Step 4: Simplify right side
    411,022.40x = 246,959,357,648.64
  5. Step 5: Solve for x
    x = 246,959,357,648.64/411,022.40
  6. Step 6: Final answer
    x = 600,841.60

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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.