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Finding the Fourth Proportional to 619,403.64, 928,477.98 and 419,744.22

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Solution

The fourth proportional to 619,403.64, 928,477.98 and 419,744.22 is: 629,191.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,403.64 : 928,477.98 = 419,744.22 : x
  2. Step 2: Convert to fraction form
    619,403.64/928,477.98 = 419,744.22/x
  3. Step 3: Cross multiply
    619,403.64x = 928,477.98 × 419,744.22
  4. Step 4: Simplify right side
    619,403.64x = 389,723,265,502.28
  5. Step 5: Solve for x
    x = 389,723,265,502.28/619,403.64
  6. Step 6: Final answer
    x = 629,191.11

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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.