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Finding the Fourth Proportional to 548,671.39, 757,425.41 and 412,757.20

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Solution

The fourth proportional to 548,671.39, 757,425.41 and 412,757.20 is: 569,799.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,671.39 : 757,425.41 = 412,757.20 : x
  2. Step 2: Convert to fraction form
    548,671.39/757,425.41 = 412,757.20/x
  3. Step 3: Cross multiply
    548,671.39x = 757,425.41 × 412,757.20
  4. Step 4: Simplify right side
    548,671.39x = 312,632,791,440.45
  5. Step 5: Solve for x
    x = 312,632,791,440.45/548,671.39
  6. Step 6: Final answer
    x = 569,799.70

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Double scale
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Similar ratio
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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.