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Finding the Fourth Proportional to 319,644,912.30, 479,467,368.45 and 319,644,912.30

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Solution

The fourth proportional to 319,644,912.30, 479,467,368.45 and 319,644,912.30 is: 479,467,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,644,912.30 : 479,467,368.45 = 319,644,912.30 : x
  2. Step 2: Convert to fraction form
    319,644,912.30/479,467,368.45 = 319,644,912.30/x
  3. Step 3: Cross multiply
    319,644,912.30x = 479,467,368.45 × 319,644,912.30
  4. Step 4: Simplify right side
    319,644,912.30x = 153,259,304,938,912,032
  5. Step 5: Solve for x
    x = 153,259,304,938,912,032/319,644,912.30
  6. Step 6: Final answer
    x = 479,467,368.45

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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.