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Finding the Fourth Proportional to 367,021.40, 512,780.20 and 367,021.40

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Solution

The fourth proportional to 367,021.40, 512,780.20 and 367,021.40 is: 512,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,021.40 : 512,780.20 = 367,021.40 : x
  2. Step 2: Convert to fraction form
    367,021.40/512,780.20 = 367,021.40/x
  3. Step 3: Cross multiply
    367,021.40x = 512,780.20 × 367,021.40
  4. Step 4: Simplify right side
    367,021.40x = 188,201,306,896.28
  5. Step 5: Solve for x
    x = 188,201,306,896.28/367,021.40
  6. Step 6: Final answer
    x = 512,780.20

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1.5x scale

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.