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Finding the Fourth Proportional to 84,558.69, 116,425.44 and 71,785.41

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Solution

The fourth proportional to 84,558.69, 116,425.44 and 71,785.41 is: 98,838.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,558.69 : 116,425.44 = 71,785.41 : x
  2. Step 2: Convert to fraction form
    84,558.69/116,425.44 = 71,785.41/x
  3. Step 3: Cross multiply
    84,558.69x = 116,425.44 × 71,785.41
  4. Step 4: Simplify right side
    84,558.69x = 8,357,647,944.83
  5. Step 5: Solve for x
    x = 8,357,647,944.83/84,558.69
  6. Step 6: Final answer
    x = 98,838.43

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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.