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Finding the Fourth Proportional to 308,283, 462,424.62 and 86,667

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Solution

The fourth proportional to 308,283, 462,424.62 and 86,667 is: 130,000.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,283 : 462,424.62 = 86,667 : x
  2. Step 2: Convert to fraction form
    308,283/462,424.62 = 86,667/x
  3. Step 3: Cross multiply
    308,283x = 462,424.62 × 86,667
  4. Step 4: Simplify right side
    308,283x = 40,076,954,541.54
  5. Step 5: Solve for x
    x = 40,076,954,541.54/308,283
  6. Step 6: Final answer
    x = 130,000.53

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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.