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Finding the Fourth Proportional to 206,948.80, 310,423.20 and 180,704.80

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Solution

The fourth proportional to 206,948.80, 310,423.20 and 180,704.80 is: 271,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,948.80 : 310,423.20 = 180,704.80 : x
  2. Step 2: Convert to fraction form
    206,948.80/310,423.20 = 180,704.80/x
  3. Step 3: Cross multiply
    206,948.80x = 310,423.20 × 180,704.80
  4. Step 4: Simplify right side
    206,948.80x = 56,094,962,271.36
  5. Step 5: Solve for x
    x = 56,094,962,271.36/206,948.80
  6. Step 6: Final answer
    x = 271,057.20

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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.