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Finding the Fourth Proportional to 129,189.50, 193,785.06 and 35,696.06

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Solution

The fourth proportional to 129,189.50, 193,785.06 and 35,696.06 is: 53,544.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,189.50 : 193,785.06 = 35,696.06 : x
  2. Step 2: Convert to fraction form
    129,189.50/193,785.06 = 35,696.06/x
  3. Step 3: Cross multiply
    129,189.50x = 193,785.06 × 35,696.06
  4. Step 4: Simplify right side
    129,189.50x = 6,917,363,128.86
  5. Step 5: Solve for x
    x = 6,917,363,128.86/129,189.50
  6. Step 6: Final answer
    x = 53,544.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.