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Finding the Fourth Proportional to 118,606.92, 163,786.42 and 76,239.24

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Solution

The fourth proportional to 118,606.92, 163,786.42 and 76,239.24 is: 105,280.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,606.92 : 163,786.42 = 76,239.24 : x
  2. Step 2: Convert to fraction form
    118,606.92/163,786.42 = 76,239.24/x
  3. Step 3: Cross multiply
    118,606.92x = 163,786.42 × 76,239.24
  4. Step 4: Simplify right side
    118,606.92x = 12,486,952,183.12
  5. Step 5: Solve for x
    x = 12,486,952,183.12/118,606.92
  6. Step 6: Final answer
    x = 105,280.13

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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.