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Finding the Fourth Proportional to 1,293,605.02, 1,772,245.20 and 1,245,121.02

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Solution

The fourth proportional to 1,293,605.02, 1,772,245.20 and 1,245,121.02 is: 1,705,821.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,605.02 : 1,772,245.20 = 1,245,121.02 : x
  2. Step 2: Convert to fraction form
    1,293,605.02/1,772,245.20 = 1,245,121.02/x
  3. Step 3: Cross multiply
    1,293,605.02x = 1,772,245.20 × 1,245,121.02
  4. Step 4: Simplify right side
    1,293,605.02x = 2,206,659,744,888.50
  5. Step 5: Solve for x
    x = 2,206,659,744,888.50/1,293,605.02
  6. Step 6: Final answer
    x = 1,705,821.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.