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Finding the Fourth Proportional to 667,558.64, 920,922.12 and 591,155.60

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Solution

The fourth proportional to 667,558.64, 920,922.12 and 591,155.60 is: 815,521.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,558.64 : 920,922.12 = 591,155.60 : x
  2. Step 2: Convert to fraction form
    667,558.64/920,922.12 = 591,155.60/x
  3. Step 3: Cross multiply
    667,558.64x = 920,922.12 × 591,155.60
  4. Step 4: Simplify right side
    667,558.64x = 544,408,268,401.87
  5. Step 5: Solve for x
    x = 544,408,268,401.87/667,558.64
  6. Step 6: Final answer
    x = 815,521.27

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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.