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Finding the Fourth Proportional to 483,361.40, 725,042.10 and 128,411.30

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Solution

The fourth proportional to 483,361.40, 725,042.10 and 128,411.30 is: 192,616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,361.40 : 725,042.10 = 128,411.30 : x
  2. Step 2: Convert to fraction form
    483,361.40/725,042.10 = 128,411.30/x
  3. Step 3: Cross multiply
    483,361.40x = 725,042.10 × 128,411.30
  4. Step 4: Simplify right side
    483,361.40x = 93,103,598,615.73
  5. Step 5: Solve for x
    x = 93,103,598,615.73/483,361.40
  6. Step 6: Final answer
    x = 192,616.95

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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.