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Finding the Fourth Proportional to 483,936.60, 725,904.90 and 405,787.80

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Solution

The fourth proportional to 483,936.60, 725,904.90 and 405,787.80 is: 608,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,936.60 : 725,904.90 = 405,787.80 : x
  2. Step 2: Convert to fraction form
    483,936.60/725,904.90 = 405,787.80/x
  3. Step 3: Cross multiply
    483,936.60x = 725,904.90 × 405,787.80
  4. Step 4: Simplify right side
    483,936.60x = 294,563,352,380.22
  5. Step 5: Solve for x
    x = 294,563,352,380.22/483,936.60
  6. Step 6: Final answer
    x = 608,681.70

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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.