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Finding the Fourth Proportional to 411,424.10, 617,136.15 and 115,936.10

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Solution

The fourth proportional to 411,424.10, 617,136.15 and 115,936.10 is: 173,904.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,424.10 : 617,136.15 = 115,936.10 : x
  2. Step 2: Convert to fraction form
    411,424.10/617,136.15 = 115,936.10/x
  3. Step 3: Cross multiply
    411,424.10x = 617,136.15 × 115,936.10
  4. Step 4: Simplify right side
    411,424.10x = 71,548,358,400.02
  5. Step 5: Solve for x
    x = 71,548,358,400.02/411,424.10
  6. Step 6: Final answer
    x = 173,904.15

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Similar ratio
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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.