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Finding the Fourth Proportional to 311,121.60, 466,912.80 and 124,267.20

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Solution

The fourth proportional to 311,121.60, 466,912.80 and 124,267.20 is: 186,492.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,121.60 : 466,912.80 = 124,267.20 : x
  2. Step 2: Convert to fraction form
    311,121.60/466,912.80 = 124,267.20/x
  3. Step 3: Cross multiply
    311,121.60x = 466,912.80 × 124,267.20
  4. Step 4: Simplify right side
    311,121.60x = 58,021,946,300.16
  5. Step 5: Solve for x
    x = 58,021,946,300.16/311,121.60
  6. Step 6: Final answer
    x = 186,492.83

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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.