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Finding the Fourth Proportional to 11,341,985.80, 17,012,978.70 and 11,192,686.60

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Solution

The fourth proportional to 11,341,985.80, 17,012,978.70 and 11,192,686.60 is: 16,789,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,341,985.80 : 17,012,978.70 = 11,192,686.60 : x
  2. Step 2: Convert to fraction form
    11,341,985.80/17,012,978.70 = 11,192,686.60/x
  3. Step 3: Cross multiply
    11,341,985.80x = 17,012,978.70 × 11,192,686.60
  4. Step 4: Simplify right side
    11,341,985.80x = 190,420,938,721,575.41
  5. Step 5: Solve for x
    x = 190,420,938,721,575.41/11,341,985.80
  6. Step 6: Final answer
    x = 16,789,029.90

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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.