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Finding the Fourth Proportional to 512,935.60, 770,715.60 and 455,198.80

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Solution

The fourth proportional to 512,935.60, 770,715.60 and 455,198.80 is: 683,962.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,935.60 : 770,715.60 = 455,198.80 : x
  2. Step 2: Convert to fraction form
    512,935.60/770,715.60 = 455,198.80/x
  3. Step 3: Cross multiply
    512,935.60x = 770,715.60 × 455,198.80
  4. Step 4: Simplify right side
    512,935.60x = 350,828,816,261.28
  5. Step 5: Solve for x
    x = 350,828,816,261.28/512,935.60
  6. Step 6: Final answer
    x = 683,962.70

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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.