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Finding the Fourth Proportional to 628,834.32, 866,138.40 and 483,361.92

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Solution

The fourth proportional to 628,834.32, 866,138.40 and 483,361.92 is: 665,768.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,834.32 : 866,138.40 = 483,361.92 : x
  2. Step 2: Convert to fraction form
    628,834.32/866,138.40 = 483,361.92/x
  3. Step 3: Cross multiply
    628,834.32x = 866,138.40 × 483,361.92
  4. Step 4: Simplify right side
    628,834.32x = 418,658,320,009.73
  5. Step 5: Solve for x
    x = 418,658,320,009.73/628,834.32
  6. Step 6: Final answer
    x = 665,768.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.