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Finding the Fourth Proportional to 1,275,627.60, 1,913,441.40 and 1,067,230.80

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Solution

The fourth proportional to 1,275,627.60, 1,913,441.40 and 1,067,230.80 is: 1,600,846.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,627.60 : 1,913,441.40 = 1,067,230.80 : x
  2. Step 2: Convert to fraction form
    1,275,627.60/1,913,441.40 = 1,067,230.80/x
  3. Step 3: Cross multiply
    1,275,627.60x = 1,913,441.40 × 1,067,230.80
  4. Step 4: Simplify right side
    1,275,627.60x = 2,042,083,596,075.12
  5. Step 5: Solve for x
    x = 2,042,083,596,075.12/1,275,627.60
  6. Step 6: Final answer
    x = 1,600,846.20

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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.