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Finding the Fourth Proportional to 621,701.60, 933,934.80 and 605,112.80

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Solution

The fourth proportional to 621,701.60, 933,934.80 and 605,112.80 is: 909,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,701.60 : 933,934.80 = 605,112.80 : x
  2. Step 2: Convert to fraction form
    621,701.60/933,934.80 = 605,112.80/x
  3. Step 3: Cross multiply
    621,701.60x = 933,934.80 × 605,112.80
  4. Step 4: Simplify right side
    621,701.60x = 565,135,901,845.44
  5. Step 5: Solve for x
    x = 565,135,901,845.44/621,701.60
  6. Step 6: Final answer
    x = 909,014.71

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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.