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Finding the Fourth Proportional to 367,636.40, 515,390.80 and 367,636.40

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Solution

The fourth proportional to 367,636.40, 515,390.80 and 367,636.40 is: 515,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,636.40 : 515,390.80 = 367,636.40 : x
  2. Step 2: Convert to fraction form
    367,636.40/515,390.80 = 367,636.40/x
  3. Step 3: Cross multiply
    367,636.40x = 515,390.80 × 367,636.40
  4. Step 4: Simplify right side
    367,636.40x = 189,476,418,305.12
  5. Step 5: Solve for x
    x = 189,476,418,305.12/367,636.40
  6. Step 6: Final answer
    x = 515,390.80

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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.