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Finding the Fourth Proportional to 341,426.80, 512,140.20 and 235,138.60

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Solution

The fourth proportional to 341,426.80, 512,140.20 and 235,138.60 is: 352,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,426.80 : 512,140.20 = 235,138.60 : x
  2. Step 2: Convert to fraction form
    341,426.80/512,140.20 = 235,138.60/x
  3. Step 3: Cross multiply
    341,426.80x = 512,140.20 × 235,138.60
  4. Step 4: Simplify right side
    341,426.80x = 120,423,929,631.72
  5. Step 5: Solve for x
    x = 120,423,929,631.72/341,426.80
  6. Step 6: Final answer
    x = 352,707.90

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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.