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Finding the Fourth Proportional to 1,263,751.40, 1,895,627.10 and 1,255,878.20

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Solution

The fourth proportional to 1,263,751.40, 1,895,627.10 and 1,255,878.20 is: 1,883,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,751.40 : 1,895,627.10 = 1,255,878.20 : x
  2. Step 2: Convert to fraction form
    1,263,751.40/1,895,627.10 = 1,255,878.20/x
  3. Step 3: Cross multiply
    1,263,751.40x = 1,895,627.10 × 1,255,878.20
  4. Step 4: Simplify right side
    1,263,751.40x = 2,380,676,750,219.22
  5. Step 5: Solve for x
    x = 2,380,676,750,219.22/1,263,751.40
  6. Step 6: Final answer
    x = 1,883,817.30

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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.