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Finding the Fourth Proportional to 627,258,731.46, 866,502,217.56 and 502,638,769.41

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Solution

The fourth proportional to 627,258,731.46, 866,502,217.56 and 502,638,769.41 is: 694,350,810.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,258,731.46 : 866,502,217.56 = 502,638,769.41 : x
  2. Step 2: Convert to fraction form
    627,258,731.46/866,502,217.56 = 502,638,769.41/x
  3. Step 3: Cross multiply
    627,258,731.46x = 866,502,217.56 × 502,638,769.41
  4. Step 4: Simplify right side
    627,258,731.46x = 435,537,608,325,394,496
  5. Step 5: Solve for x
    x = 435,537,608,325,394,496/627,258,731.46
  6. Step 6: Final answer
    x = 694,350,810.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.