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Finding the Fourth Proportional to 19,305,969.90, 28,958,512.05 and 9,718,773.90

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Solution

The fourth proportional to 19,305,969.90, 28,958,512.05 and 9,718,773.90 is: 14,577,937.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,305,969.90 : 28,958,512.05 = 9,718,773.90 : x
  2. Step 2: Convert to fraction form
    19,305,969.90/28,958,512.05 = 9,718,773.90/x
  3. Step 3: Cross multiply
    19,305,969.90x = 28,958,512.05 × 9,718,773.90
  4. Step 4: Simplify right side
    19,305,969.90x = 281,441,231,094,375.50
  5. Step 5: Solve for x
    x = 281,441,231,094,375.50/19,305,969.90
  6. Step 6: Final answer
    x = 14,577,937.94

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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.