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Finding the Fourth Proportional to 620,586.30, 856,520.55 and 365,922.30

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Solution

The fourth proportional to 620,586.30, 856,520.55 and 365,922.30 is: 505,038.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,586.30 : 856,520.55 = 365,922.30 : x
  2. Step 2: Convert to fraction form
    620,586.30/856,520.55 = 365,922.30/x
  3. Step 3: Cross multiply
    620,586.30x = 856,520.55 × 365,922.30
  4. Step 4: Simplify right side
    620,586.30x = 313,419,969,653.27
  5. Step 5: Solve for x
    x = 313,419,969,653.27/620,586.30
  6. Step 6: Final answer
    x = 505,038.49

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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.