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Finding the Fourth Proportional to 121,018.64, 166,992.93 and 67,294.98

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Solution

The fourth proportional to 121,018.64, 166,992.93 and 67,294.98 is: 92,859.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,018.64 : 166,992.93 = 67,294.98 : x
  2. Step 2: Convert to fraction form
    121,018.64/166,992.93 = 67,294.98/x
  3. Step 3: Cross multiply
    121,018.64x = 166,992.93 × 67,294.98
  4. Step 4: Simplify right side
    121,018.64x = 11,237,785,884.49
  5. Step 5: Solve for x
    x = 11,237,785,884.49/121,018.64
  6. Step 6: Final answer
    x = 92,859.96

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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.