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Finding the Fourth Proportional to 308,133.40, 462,200.10 and 206,656.60

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Solution

The fourth proportional to 308,133.40, 462,200.10 and 206,656.60 is: 309,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,133.40 : 462,200.10 = 206,656.60 : x
  2. Step 2: Convert to fraction form
    308,133.40/462,200.10 = 206,656.60/x
  3. Step 3: Cross multiply
    308,133.40x = 462,200.10 × 206,656.60
  4. Step 4: Simplify right side
    308,133.40x = 95,516,701,185.66
  5. Step 5: Solve for x
    x = 95,516,701,185.66/308,133.40
  6. Step 6: Final answer
    x = 309,984.90

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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.