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Finding the Fourth Proportional to 118,859.10, 166,091.70 and 118,859.10

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Solution

The fourth proportional to 118,859.10, 166,091.70 and 118,859.10 is: 166,091.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,859.10 : 166,091.70 = 118,859.10 : x
  2. Step 2: Convert to fraction form
    118,859.10/166,091.70 = 118,859.10/x
  3. Step 3: Cross multiply
    118,859.10x = 166,091.70 × 118,859.10
  4. Step 4: Simplify right side
    118,859.10x = 19,741,509,979.47
  5. Step 5: Solve for x
    x = 19,741,509,979.47/118,859.10
  6. Step 6: Final answer
    x = 166,091.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.