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Finding the Fourth Proportional to 483,936.10, 725,904.15 and 405,787.30

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Solution

The fourth proportional to 483,936.10, 725,904.15 and 405,787.30 is: 608,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,936.10 : 725,904.15 = 405,787.30 : x
  2. Step 2: Convert to fraction form
    483,936.10/725,904.15 = 405,787.30/x
  3. Step 3: Cross multiply
    483,936.10x = 725,904.15 × 405,787.30
  4. Step 4: Simplify right side
    483,936.10x = 294,562,685,087.30
  5. Step 5: Solve for x
    x = 294,562,685,087.30/483,936.10
  6. Step 6: Final answer
    x = 608,680.95

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Double scale
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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.