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Finding the Fourth Proportional to 367,031.20, 513,221.60 and 367,031.20

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Solution

The fourth proportional to 367,031.20, 513,221.60 and 367,031.20 is: 513,221.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,031.20 : 513,221.60 = 367,031.20 : x
  2. Step 2: Convert to fraction form
    367,031.20/513,221.60 = 367,031.20/x
  3. Step 3: Cross multiply
    367,031.20x = 513,221.60 × 367,031.20
  4. Step 4: Simplify right side
    367,031.20x = 188,368,339,713.92
  5. Step 5: Solve for x
    x = 188,368,339,713.92/367,031.20
  6. Step 6: Final answer
    x = 513,221.60

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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.