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Finding the Fourth Proportional to 1,295,771.60, 1,943,657.40 and 621,738.20

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Solution

The fourth proportional to 1,295,771.60, 1,943,657.40 and 621,738.20 is: 932,607.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,771.60 : 1,943,657.40 = 621,738.20 : x
  2. Step 2: Convert to fraction form
    1,295,771.60/1,943,657.40 = 621,738.20/x
  3. Step 3: Cross multiply
    1,295,771.60x = 1,943,657.40 × 621,738.20
  4. Step 4: Simplify right side
    1,295,771.60x = 1,208,446,053,292.68
  5. Step 5: Solve for x
    x = 1,208,446,053,292.68/1,295,771.60
  6. Step 6: Final answer
    x = 932,607.30

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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.