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Finding the Third Proportional to 393,870,576 and 861,865,440

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Solution

The third proportional to 393,870,576 and 861,865,440 is: 1,885,929,241.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,870,576 : 861,865,440 = 861,865,440 : x
  2. Step 2: Convert to fraction form
    393,870,576/861,865,440 = 861,865,440/x
  3. Step 3: Cross multiply
    393,870,576x = 861,865,440 × 861,865,440
  4. Step 4: Simplify right side
    393,870,576x = 742,812,036,666,393,600
  5. Step 5: Solve for x
    x = 742,812,036,666,393,600/393,870,576
  6. Step 6: Final answer
    x = 1,885,929,241.55

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.