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Finding the Fourth Proportional to 445,535.80, 668,303.70 and 419,291.80

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Solution

The fourth proportional to 445,535.80, 668,303.70 and 419,291.80 is: 628,937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,535.80 : 668,303.70 = 419,291.80 : x
  2. Step 2: Convert to fraction form
    445,535.80/668,303.70 = 419,291.80/x
  3. Step 3: Cross multiply
    445,535.80x = 668,303.70 × 419,291.80
  4. Step 4: Simplify right side
    445,535.80x = 280,214,261,319.66
  5. Step 5: Solve for x
    x = 280,214,261,319.66/445,535.80
  6. Step 6: Final answer
    x = 628,937.70

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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.