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Finding the Fourth Proportional to 129,773.10, 194,696.10 and 63,215.40

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Solution

The fourth proportional to 129,773.10, 194,696.10 and 63,215.40 is: 94,840.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,773.10 : 194,696.10 = 63,215.40 : x
  2. Step 2: Convert to fraction form
    129,773.10/194,696.10 = 63,215.40/x
  3. Step 3: Cross multiply
    129,773.10x = 194,696.10 × 63,215.40
  4. Step 4: Simplify right side
    129,773.10x = 12,307,791,839.94
  5. Step 5: Solve for x
    x = 12,307,791,839.94/129,773.10
  6. Step 6: Final answer
    x = 94,840.86

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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.