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Finding the Fourth Proportional to 19,367,789.60, 29,051,684.40 and 12,873,274.40

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Solution

The fourth proportional to 19,367,789.60, 29,051,684.40 and 12,873,274.40 is: 19,309,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,367,789.60 : 29,051,684.40 = 12,873,274.40 : x
  2. Step 2: Convert to fraction form
    19,367,789.60/29,051,684.40 = 12,873,274.40/x
  3. Step 3: Cross multiply
    19,367,789.60x = 29,051,684.40 × 12,873,274.40
  4. Step 4: Simplify right side
    19,367,789.60x = 373,990,305,063,399.38
  5. Step 5: Solve for x
    x = 373,990,305,063,399.38/19,367,789.60
  6. Step 6: Final answer
    x = 19,309,911.60

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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.