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Finding the Fourth Proportional to 71,059.73, 98,054.09 and 42,380.97

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Solution

The fourth proportional to 71,059.73, 98,054.09 and 42,380.97 is: 58,480.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,059.73 : 98,054.09 = 42,380.97 : x
  2. Step 2: Convert to fraction form
    71,059.73/98,054.09 = 42,380.97/x
  3. Step 3: Cross multiply
    71,059.73x = 98,054.09 × 42,380.97
  4. Step 4: Simplify right side
    71,059.73x = 4,155,627,815.94
  5. Step 5: Solve for x
    x = 4,155,627,815.94/71,059.73
  6. Step 6: Final answer
    x = 58,480.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.