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Finding the Fourth Proportional to 97,411.40, 146,174.70 and 71,049.80

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Solution

The fourth proportional to 97,411.40, 146,174.70 and 71,049.80 is: 106,616.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,411.40 : 146,174.70 = 71,049.80 : x
  2. Step 2: Convert to fraction form
    97,411.40/146,174.70 = 71,049.80/x
  3. Step 3: Cross multiply
    97,411.40x = 146,174.70 × 71,049.80
  4. Step 4: Simplify right side
    97,411.40x = 10,385,683,200.06
  5. Step 5: Solve for x
    x = 10,385,683,200.06/97,411.40
  6. Step 6: Final answer
    x = 106,616.71

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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.