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Finding the Fourth Proportional to 2,978,866.52, 4,110,712.99 and 1,620,744.92

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Solution

The fourth proportional to 2,978,866.52, 4,110,712.99 and 1,620,744.92 is: 2,236,561.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978,866.52 : 4,110,712.99 = 1,620,744.92 : x
  2. Step 2: Convert to fraction form
    2,978,866.52/4,110,712.99 = 1,620,744.92/x
  3. Step 3: Cross multiply
    2,978,866.52x = 4,110,712.99 × 1,620,744.92
  4. Step 4: Simplify right side
    2,978,866.52x = 6,662,417,171,515.08
  5. Step 5: Solve for x
    x = 6,662,417,171,515.08/2,978,866.52
  6. Step 6: Final answer
    x = 2,236,561.17

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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.