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Finding the Fourth Proportional to 557,386.80, 836,080.20 and 401,089.20

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Solution

The fourth proportional to 557,386.80, 836,080.20 and 401,089.20 is: 601,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,386.80 : 836,080.20 = 401,089.20 : x
  2. Step 2: Convert to fraction form
    557,386.80/836,080.20 = 401,089.20/x
  3. Step 3: Cross multiply
    557,386.80x = 836,080.20 × 401,089.20
  4. Step 4: Simplify right side
    557,386.80x = 335,342,738,553.84
  5. Step 5: Solve for x
    x = 335,342,738,553.84/557,386.80
  6. Step 6: Final answer
    x = 601,633.80

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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.