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Finding the Fourth Proportional to 1,868,468.01, 2,578,485.83 and 1,009,028.19

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Solution

The fourth proportional to 1,868,468.01, 2,578,485.83 and 1,009,028.19 is: 1,392,458.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,468.01 : 2,578,485.83 = 1,009,028.19 : x
  2. Step 2: Convert to fraction form
    1,868,468.01/2,578,485.83 = 1,009,028.19/x
  3. Step 3: Cross multiply
    1,868,468.01x = 2,578,485.83 × 1,009,028.19
  4. Step 4: Simplify right side
    1,868,468.01x = 2,601,764,888,619.42
  5. Step 5: Solve for x
    x = 2,601,764,888,619.42/1,868,468.01
  6. Step 6: Final answer
    x = 1,392,458.89

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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.