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Finding the Fourth Proportional to 129,187.60, 193,785.18 and 35,693.44

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Solution

The fourth proportional to 129,187.60, 193,785.18 and 35,693.44 is: 53,541.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,187.60 : 193,785.18 = 35,693.44 : x
  2. Step 2: Convert to fraction form
    129,187.60/193,785.18 = 35,693.44/x
  3. Step 3: Cross multiply
    129,187.60x = 193,785.18 × 35,693.44
  4. Step 4: Simplify right side
    129,187.60x = 6,916,859,695.22
  5. Step 5: Solve for x
    x = 6,916,859,695.22/129,187.60
  6. Step 6: Final answer
    x = 53,541.20

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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.