Home / 12,936,540.80-19,404,811.20-7,897,692.80

Finding the Fourth Proportional to 12,936,540.80, 19,404,811.20 and 7,897,692.80

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Solution

The fourth proportional to 12,936,540.80, 19,404,811.20 and 7,897,692.80 is: 11,846,539.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936,540.80 : 19,404,811.20 = 7,897,692.80 : x
  2. Step 2: Convert to fraction form
    12,936,540.80/19,404,811.20 = 7,897,692.80/x
  3. Step 3: Cross multiply
    12,936,540.80x = 19,404,811.20 × 7,897,692.80
  4. Step 4: Simplify right side
    12,936,540.80x = 153,253,237,699,599.34
  5. Step 5: Solve for x
    x = 153,253,237,699,599.34/12,936,540.80
  6. Step 6: Final answer
    x = 11,846,539.20

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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.