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Finding the Fourth Proportional to 20,648,963.20, 30,973,444.80 and 19,373,504.80

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Solution

The fourth proportional to 20,648,963.20, 30,973,444.80 and 19,373,504.80 is: 29,060,257.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648,963.20 : 30,973,444.80 = 19,373,504.80 : x
  2. Step 2: Convert to fraction form
    20,648,963.20/30,973,444.80 = 19,373,504.80/x
  3. Step 3: Cross multiply
    20,648,963.20x = 30,973,444.80 × 19,373,504.80
  4. Step 4: Simplify right side
    20,648,963.20x = 600,064,181,505,335.12
  5. Step 5: Solve for x
    x = 600,064,181,505,335.12/20,648,963.20
  6. Step 6: Final answer
    x = 29,060,257.20

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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.