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Finding the Fourth Proportional to 308,512.80, 462,749.76 and 98,301.60

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Solution

The fourth proportional to 308,512.80, 462,749.76 and 98,301.60 is: 147,446.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,512.80 : 462,749.76 = 98,301.60 : x
  2. Step 2: Convert to fraction form
    308,512.80/462,749.76 = 98,301.60/x
  3. Step 3: Cross multiply
    308,512.80x = 462,749.76 × 98,301.60
  4. Step 4: Simplify right side
    308,512.80x = 45,489,041,807.62
  5. Step 5: Solve for x
    x = 45,489,041,807.62/308,512.80
  6. Step 6: Final answer
    x = 147,446.21

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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.