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Finding the Fourth Proportional to 78,363.91, 108,169.79 and 46,532.58

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Solution

The fourth proportional to 78,363.91, 108,169.79 and 46,532.58 is: 64,231.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,363.91 : 108,169.79 = 46,532.58 : x
  2. Step 2: Convert to fraction form
    78,363.91/108,169.79 = 46,532.58/x
  3. Step 3: Cross multiply
    78,363.91x = 108,169.79 × 46,532.58
  4. Step 4: Simplify right side
    78,363.91x = 5,033,419,174.10
  5. Step 5: Solve for x
    x = 5,033,419,174.10/78,363.91
  6. Step 6: Final answer
    x = 64,231.34

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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.