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Finding the Fourth Proportional to 97,808.40, 146,712.60 and 66,704.40

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Solution

The fourth proportional to 97,808.40, 146,712.60 and 66,704.40 is: 100,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,808.40 : 146,712.60 = 66,704.40 : x
  2. Step 2: Convert to fraction form
    97,808.40/146,712.60 = 66,704.40/x
  3. Step 3: Cross multiply
    97,808.40x = 146,712.60 × 66,704.40
  4. Step 4: Simplify right side
    97,808.40x = 9,786,375,955.44
  5. Step 5: Solve for x
    x = 9,786,375,955.44/97,808.40
  6. Step 6: Final answer
    x = 100,056.60

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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.