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Finding the Fourth Proportional to 619,903.20, 929,941.20 and 264,914.40

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Solution

The fourth proportional to 619,903.20, 929,941.20 and 264,914.40 is: 397,408.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,903.20 : 929,941.20 = 264,914.40 : x
  2. Step 2: Convert to fraction form
    619,903.20/929,941.20 = 264,914.40/x
  3. Step 3: Cross multiply
    619,903.20x = 929,941.20 × 264,914.40
  4. Step 4: Simplify right side
    619,903.20x = 246,354,815,033.28
  5. Step 5: Solve for x
    x = 246,354,815,033.28/619,903.20
  6. Step 6: Final answer
    x = 397,408.52

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Double scale
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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.