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Finding the Fourth Proportional to 68,679.34, 103,487.02 and 56,472.82

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Solution

The fourth proportional to 68,679.34, 103,487.02 and 56,472.82 is: 85,094.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,679.34 : 103,487.02 = 56,472.82 : x
  2. Step 2: Convert to fraction form
    68,679.34/103,487.02 = 56,472.82/x
  3. Step 3: Cross multiply
    68,679.34x = 103,487.02 × 56,472.82
  4. Step 4: Simplify right side
    68,679.34x = 5,844,203,852.80
  5. Step 5: Solve for x
    x = 5,844,203,852.80/68,679.34
  6. Step 6: Final answer
    x = 85,094.06

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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.