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Finding the Fourth Proportional to 398,601,368.70, 597,902,053.05 and 343,118,928.30

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Solution

The fourth proportional to 398,601,368.70, 597,902,053.05 and 343,118,928.30 is: 514,678,392.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,601,368.70 : 597,902,053.05 = 343,118,928.30 : x
  2. Step 2: Convert to fraction form
    398,601,368.70/597,902,053.05 = 343,118,928.30/x
  3. Step 3: Cross multiply
    398,601,368.70x = 597,902,053.05 × 343,118,928.30
  4. Step 4: Simplify right side
    398,601,368.70x = 205,151,511,670,885,728
  5. Step 5: Solve for x
    x = 205,151,511,670,885,728/398,601,368.70
  6. Step 6: Final answer
    x = 514,678,392.45

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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.