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Finding the Fourth Proportional to 619,415.64, 928,495.98 and 419,756.22

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Solution

The fourth proportional to 619,415.64, 928,495.98 and 419,756.22 is: 629,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,415.64 : 928,495.98 = 419,756.22 : x
  2. Step 2: Convert to fraction form
    619,415.64/928,495.98 = 419,756.22/x
  3. Step 3: Cross multiply
    619,415.64x = 928,495.98 × 419,756.22
  4. Step 4: Simplify right side
    619,415.64x = 389,741,962,850.00
  5. Step 5: Solve for x
    x = 389,741,962,850.00/619,415.64
  6. Step 6: Final answer
    x = 629,209.11

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1.5x scale

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.