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Finding the Fourth Proportional to 512,395.60, 768,195.40 and 332,100.40

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Solution

The fourth proportional to 512,395.60, 768,195.40 and 332,100.40 is: 497,892.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,395.60 : 768,195.40 = 332,100.40 : x
  2. Step 2: Convert to fraction form
    512,395.60/768,195.40 = 332,100.40/x
  3. Step 3: Cross multiply
    512,395.60x = 768,195.40 × 332,100.40
  4. Step 4: Simplify right side
    512,395.60x = 255,117,999,618.16
  5. Step 5: Solve for x
    x = 255,117,999,618.16/512,395.60
  6. Step 6: Final answer
    x = 497,892.64

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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.