Home / 431,636.20-647,528.30-132,109.36

Finding the Fourth Proportional to 431,636.20, 647,528.30 and 132,109.36

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Solution

The fourth proportional to 431,636.20, 647,528.30 and 132,109.36 is: 198,186.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,636.20 : 647,528.30 = 132,109.36 : x
  2. Step 2: Convert to fraction form
    431,636.20/647,528.30 = 132,109.36/x
  3. Step 3: Cross multiply
    431,636.20x = 647,528.30 × 132,109.36
  4. Step 4: Simplify right side
    431,636.20x = 85,544,549,294.89
  5. Step 5: Solve for x
    x = 85,544,549,294.89/431,636.20
  6. Step 6: Final answer
    x = 198,186.69

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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.