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Finding the Fourth Proportional to 544,205.40, 816,308.10 and 393,739.80

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Solution

The fourth proportional to 544,205.40, 816,308.10 and 393,739.80 is: 590,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,205.40 : 816,308.10 = 393,739.80 : x
  2. Step 2: Convert to fraction form
    544,205.40/816,308.10 = 393,739.80/x
  3. Step 3: Cross multiply
    544,205.40x = 816,308.10 × 393,739.80
  4. Step 4: Simplify right side
    544,205.40x = 321,412,988,032.38
  5. Step 5: Solve for x
    x = 321,412,988,032.38/544,205.40
  6. Step 6: Final answer
    x = 590,609.70

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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.