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Finding the Fourth Proportional to 1,918,662.66, 2,647,684.86 and 1,059,204.48

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Solution

The fourth proportional to 1,918,662.66, 2,647,684.86 and 1,059,204.48 is: 1,461,663.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,662.66 : 2,647,684.86 = 1,059,204.48 : x
  2. Step 2: Convert to fraction form
    1,918,662.66/2,647,684.86 = 1,059,204.48/x
  3. Step 3: Cross multiply
    1,918,662.66x = 2,647,684.86 × 1,059,204.48
  4. Step 4: Simplify right side
    1,918,662.66x = 2,804,439,665,340.17
  5. Step 5: Solve for x
    x = 2,804,439,665,340.17/1,918,662.66
  6. Step 6: Final answer
    x = 1,461,663.75

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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.