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Finding the Fourth Proportional to 16,642,261.60, 24,982,054.80 and 12,872,456.80

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Solution

The fourth proportional to 16,642,261.60, 24,982,054.80 and 12,872,456.80 is: 19,323,120.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,642,261.60 : 24,982,054.80 = 12,872,456.80 : x
  2. Step 2: Convert to fraction form
    16,642,261.60/24,982,054.80 = 12,872,456.80/x
  3. Step 3: Cross multiply
    16,642,261.60x = 24,982,054.80 × 12,872,456.80
  4. Step 4: Simplify right side
    16,642,261.60x = 321,580,421,188,232.69
  5. Step 5: Solve for x
    x = 321,580,421,188,232.69/16,642,261.60
  6. Step 6: Final answer
    x = 19,323,120.19

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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.