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Finding the Fourth Proportional to 13,859,893.93, 19,126,780.55 and 7,664,620.54

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Solution

The fourth proportional to 13,859,893.93, 19,126,780.55 and 7,664,620.54 is: 10,577,246.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859,893.93 : 19,126,780.55 = 7,664,620.54 : x
  2. Step 2: Convert to fraction form
    13,859,893.93/19,126,780.55 = 7,664,620.54/x
  3. Step 3: Cross multiply
    13,859,893.93x = 19,126,780.55 × 7,664,620.54
  4. Step 4: Simplify right side
    13,859,893.93x = 146,599,515,067,602.50
  5. Step 5: Solve for x
    x = 146,599,515,067,602.50/13,859,893.93
  6. Step 6: Final answer
    x = 10,577,246.54

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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.