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Finding the Fourth Proportional to 512,535.60, 768,815.55 and 157,552.70

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Solution

The fourth proportional to 512,535.60, 768,815.55 and 157,552.70 is: 236,332.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,535.60 : 768,815.55 = 157,552.70 : x
  2. Step 2: Convert to fraction form
    512,535.60/768,815.55 = 157,552.70/x
  3. Step 3: Cross multiply
    512,535.60x = 768,815.55 × 157,552.70
  4. Step 4: Simplify right side
    512,535.60x = 121,128,961,860.41
  5. Step 5: Solve for x
    x = 121,128,961,860.41/512,535.60
  6. Step 6: Final answer
    x = 236,332.78

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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.