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Finding the Fourth Proportional to 53,761,714.80, 80,653,069.80 and 21,408,111.60

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Solution

The fourth proportional to 53,761,714.80, 80,653,069.80 and 21,408,111.60 is: 32,116,347.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,761,714.80 : 80,653,069.80 = 21,408,111.60 : x
  2. Step 2: Convert to fraction form
    53,761,714.80/80,653,069.80 = 21,408,111.60/x
  3. Step 3: Cross multiply
    53,761,714.80x = 80,653,069.80 × 21,408,111.60
  4. Step 4: Simplify right side
    53,761,714.80x = 1,726,629,919,160,989.75
  5. Step 5: Solve for x
    x = 1,726,629,919,160,989.75/53,761,714.80
  6. Step 6: Final answer
    x = 32,116,347.58

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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.