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Finding the Fourth Proportional to 1,866,826.44, 2,800,387.08 and 919,680.48

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Solution

The fourth proportional to 1,866,826.44, 2,800,387.08 and 919,680.48 is: 1,379,593.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866,826.44 : 2,800,387.08 = 919,680.48 : x
  2. Step 2: Convert to fraction form
    1,866,826.44/2,800,387.08 = 919,680.48/x
  3. Step 3: Cross multiply
    1,866,826.44x = 2,800,387.08 × 919,680.48
  4. Step 4: Simplify right side
    1,866,826.44x = 2,575,461,333,920.20
  5. Step 5: Solve for x
    x = 2,575,461,333,920.20/1,866,826.44
  6. Step 6: Final answer
    x = 1,379,593.35

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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.