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Finding the Fourth Proportional to 544,000.80, 816,001.20 and 505,120.80

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Solution

The fourth proportional to 544,000.80, 816,001.20 and 505,120.80 is: 757,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,000.80 : 816,001.20 = 505,120.80 : x
  2. Step 2: Convert to fraction form
    544,000.80/816,001.20 = 505,120.80/x
  3. Step 3: Cross multiply
    544,000.80x = 816,001.20 × 505,120.80
  4. Step 4: Simplify right side
    544,000.80x = 412,179,178,944.96
  5. Step 5: Solve for x
    x = 412,179,178,944.96/544,000.80
  6. Step 6: Final answer
    x = 757,681.20

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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.