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Finding the Fourth Proportional to 21,723,216.80, 32,605,820.40 and 10,952,679.20

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Solution

The fourth proportional to 21,723,216.80, 32,605,820.40 and 10,952,679.20 is: 16,439,604.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,723,216.80 : 32,605,820.40 = 10,952,679.20 : x
  2. Step 2: Convert to fraction form
    21,723,216.80/32,605,820.40 = 10,952,679.20/x
  3. Step 3: Cross multiply
    21,723,216.80x = 32,605,820.40 × 10,952,679.20
  4. Step 4: Simplify right side
    21,723,216.80x = 357,121,090,894,015.62
  5. Step 5: Solve for x
    x = 357,121,090,894,015.62/21,723,216.80
  6. Step 6: Final answer
    x = 16,439,604.42

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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.