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Finding the Fourth Proportional to 267,416.20, 401,124.30 and 207,929.80

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Solution

The fourth proportional to 267,416.20, 401,124.30 and 207,929.80 is: 311,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,416.20 : 401,124.30 = 207,929.80 : x
  2. Step 2: Convert to fraction form
    267,416.20/401,124.30 = 207,929.80/x
  3. Step 3: Cross multiply
    267,416.20x = 401,124.30 × 207,929.80
  4. Step 4: Simplify right side
    267,416.20x = 83,405,695,474.14
  5. Step 5: Solve for x
    x = 83,405,695,474.14/267,416.20
  6. Step 6: Final answer
    x = 311,894.70

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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.