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Finding the Fourth Proportional to 1,914,775.65, 2,642,406.48 and 1,055,338.11

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Solution

The fourth proportional to 1,914,775.65, 2,642,406.48 and 1,055,338.11 is: 1,456,375.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914,775.65 : 2,642,406.48 = 1,055,338.11 : x
  2. Step 2: Convert to fraction form
    1,914,775.65/2,642,406.48 = 1,055,338.11/x
  3. Step 3: Cross multiply
    1,914,775.65x = 2,642,406.48 × 1,055,338.11
  4. Step 4: Simplify right side
    1,914,775.65x = 2,788,632,260,454.95
  5. Step 5: Solve for x
    x = 2,788,632,260,454.95/1,914,775.65
  6. Step 6: Final answer
    x = 1,456,375.46

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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.