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Finding the Fourth Proportional to 319,644,810.80, 479,467,216.20 and 319,644,810.80

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Solution

The fourth proportional to 319,644,810.80, 479,467,216.20 and 319,644,810.80 is: 479,467,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,644,810.80 : 479,467,216.20 = 319,644,810.80 : x
  2. Step 2: Convert to fraction form
    319,644,810.80/479,467,216.20 = 319,644,810.80/x
  3. Step 3: Cross multiply
    319,644,810.80x = 479,467,216.20 × 319,644,810.80
  4. Step 4: Simplify right side
    319,644,810.80x = 153,259,207,607,051,712
  5. Step 5: Solve for x
    x = 153,259,207,607,051,712/319,644,810.80
  6. Step 6: Final answer
    x = 479,467,216.20

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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.