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Finding the Fourth Proportional to 114,656.40, 171,725.40 and 68,000.40

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Solution

The fourth proportional to 114,656.40, 171,725.40 and 68,000.40 is: 101,846.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,656.40 : 171,725.40 = 68,000.40 : x
  2. Step 2: Convert to fraction form
    114,656.40/171,725.40 = 68,000.40/x
  3. Step 3: Cross multiply
    114,656.40x = 171,725.40 × 68,000.40
  4. Step 4: Simplify right side
    114,656.40x = 11,677,395,890.16
  5. Step 5: Solve for x
    x = 11,677,395,890.16/114,656.40
  6. Step 6: Final answer
    x = 101,846.87

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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.