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Finding the Fourth Proportional to 308,615.69, 462,876.75 and 83,993.62

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Solution

The fourth proportional to 308,615.69, 462,876.75 and 83,993.62 is: 125,977.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,615.69 : 462,876.75 = 83,993.62 : x
  2. Step 2: Convert to fraction form
    308,615.69/462,876.75 = 83,993.62/x
  3. Step 3: Cross multiply
    308,615.69x = 462,876.75 × 83,993.62
  4. Step 4: Simplify right side
    308,615.69x = 38,878,695,908.76
  5. Step 5: Solve for x
    x = 38,878,695,908.76/308,615.69
  6. Step 6: Final answer
    x = 125,977.71

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1.5x scale

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.