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Finding the Fourth Proportional to 97,760.88, 134,971.16 and 67,186.64

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Solution

The fourth proportional to 97,760.88, 134,971.16 and 67,186.64 is: 92,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,760.88 : 134,971.16 = 67,186.64 : x
  2. Step 2: Convert to fraction form
    97,760.88/134,971.16 = 67,186.64/x
  3. Step 3: Cross multiply
    97,760.88x = 134,971.16 × 67,186.64
  4. Step 4: Simplify right side
    97,760.88x = 9,068,258,737.30
  5. Step 5: Solve for x
    x = 9,068,258,737.30/97,760.88
  6. Step 6: Final answer
    x = 92,759.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.