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Finding the Fourth Proportional to 439,223.60, 658,835.40 and 393,604.40

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Solution

The fourth proportional to 439,223.60, 658,835.40 and 393,604.40 is: 590,406.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,223.60 : 658,835.40 = 393,604.40 : x
  2. Step 2: Convert to fraction form
    439,223.60/658,835.40 = 393,604.40/x
  3. Step 3: Cross multiply
    439,223.60x = 658,835.40 × 393,604.40
  4. Step 4: Simplify right side
    439,223.60x = 259,320,512,315.76
  5. Step 5: Solve for x
    x = 259,320,512,315.76/439,223.60
  6. Step 6: Final answer
    x = 590,406.60

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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.