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Finding the Fourth Proportional to 512,266.60, 718,223 and 512,266.60

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Solution

The fourth proportional to 512,266.60, 718,223 and 512,266.60 is: 718,223

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,266.60 : 718,223 = 512,266.60 : x
  2. Step 2: Convert to fraction form
    512,266.60/718,223 = 512,266.60/x
  3. Step 3: Cross multiply
    512,266.60x = 718,223 × 512,266.60
  4. Step 4: Simplify right side
    512,266.60x = 367,921,654,251.80
  5. Step 5: Solve for x
    x = 367,921,654,251.80/512,266.60
  6. Step 6: Final answer
    x = 718,223

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.