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Finding the Fourth Proportional to 1,102,072.80, 1,649,998.80 and 1,070,968.80

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Solution

The fourth proportional to 1,102,072.80, 1,649,998.80 and 1,070,968.80 is: 1,603,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,072.80 : 1,649,998.80 = 1,070,968.80 : x
  2. Step 2: Convert to fraction form
    1,102,072.80/1,649,998.80 = 1,070,968.80/x
  3. Step 3: Cross multiply
    1,102,072.80x = 1,649,998.80 × 1,070,968.80
  4. Step 4: Simplify right side
    1,102,072.80x = 1,767,097,234,837.44
  5. Step 5: Solve for x
    x = 1,767,097,234,837.44/1,102,072.80
  6. Step 6: Final answer
    x = 1,603,430.59

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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.