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Finding the Fourth Proportional to 97,706.20, 146,607.90 and 38,543.80

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Solution

The fourth proportional to 97,706.20, 146,607.90 and 38,543.80 is: 57,834.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,706.20 : 146,607.90 = 38,543.80 : x
  2. Step 2: Convert to fraction form
    97,706.20/146,607.90 = 38,543.80/x
  3. Step 3: Cross multiply
    97,706.20x = 146,607.90 × 38,543.80
  4. Step 4: Simplify right side
    97,706.20x = 5,650,825,576.02
  5. Step 5: Solve for x
    x = 5,650,825,576.02/97,706.20
  6. Step 6: Final answer
    x = 57,834.87

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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.