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Finding the Fourth Proportional to 129,687.71, 194,515.16 and 34,925.46

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Solution

The fourth proportional to 129,687.71, 194,515.16 and 34,925.46 is: 52,383.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,687.71 : 194,515.16 = 34,925.46 : x
  2. Step 2: Convert to fraction form
    129,687.71/194,515.16 = 34,925.46/x
  3. Step 3: Cross multiply
    129,687.71x = 194,515.16 × 34,925.46
  4. Step 4: Simplify right side
    129,687.71x = 6,793,531,265.35
  5. Step 5: Solve for x
    x = 6,793,531,265.35/129,687.71
  6. Step 6: Final answer
    x = 52,383.77

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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.