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Finding the Fourth Proportional to 1,855,743.66, 2,560,805.01 and 1,091,649.60

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Solution

The fourth proportional to 1,855,743.66, 2,560,805.01 and 1,091,649.60 is: 1,506,405.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855,743.66 : 2,560,805.01 = 1,091,649.60 : x
  2. Step 2: Convert to fraction form
    1,855,743.66/2,560,805.01 = 1,091,649.60/x
  3. Step 3: Cross multiply
    1,855,743.66x = 2,560,805.01 × 1,091,649.60
  4. Step 4: Simplify right side
    1,855,743.66x = 2,795,501,764,844.50
  5. Step 5: Solve for x
    x = 2,795,501,764,844.50/1,855,743.66
  6. Step 6: Final answer
    x = 1,506,405.13

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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.