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Finding the Fourth Proportional to 839,924.20, 1,259,886.30 and 839,924.20

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Solution

The fourth proportional to 839,924.20, 1,259,886.30 and 839,924.20 is: 1,259,886.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,924.20 : 1,259,886.30 = 839,924.20 : x
  2. Step 2: Convert to fraction form
    839,924.20/1,259,886.30 = 839,924.20/x
  3. Step 3: Cross multiply
    839,924.20x = 1,259,886.30 × 839,924.20
  4. Step 4: Simplify right side
    839,924.20x = 1,058,208,992,618.46
  5. Step 5: Solve for x
    x = 1,058,208,992,618.46/839,924.20
  6. Step 6: Final answer
    x = 1,259,886.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.