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Finding the Fourth Proportional to 19,084,742.28, 26,334,978.12 and 11,348,289.72

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Solution

The fourth proportional to 19,084,742.28, 26,334,978.12 and 11,348,289.72 is: 15,659,470.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,084,742.28 : 26,334,978.12 = 11,348,289.72 : x
  2. Step 2: Convert to fraction form
    19,084,742.28/26,334,978.12 = 11,348,289.72/x
  3. Step 3: Cross multiply
    19,084,742.28x = 26,334,978.12 × 11,348,289.72
  4. Step 4: Simplify right side
    19,084,742.28x = 298,856,961,475,620.94
  5. Step 5: Solve for x
    x = 298,856,961,475,620.94/19,084,742.28
  6. Step 6: Final answer
    x = 15,659,470.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.