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Finding the Fourth Proportional to 68,680.34, 103,488.53 and 56,473.82

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Solution

The fourth proportional to 68,680.34, 103,488.53 and 56,473.82 is: 85,095.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,680.34 : 103,488.53 = 56,473.82 : x
  2. Step 2: Convert to fraction form
    68,680.34/103,488.53 = 56,473.82/x
  3. Step 3: Cross multiply
    68,680.34x = 103,488.53 × 56,473.82
  4. Step 4: Simplify right side
    68,680.34x = 5,844,392,615.28
  5. Step 5: Solve for x
    x = 5,844,392,615.28/68,680.34
  6. Step 6: Final answer
    x = 85,095.57

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.