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Finding the Fourth Proportional to 120,762.95, 166,645.16 and 67,047.95

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Solution

The fourth proportional to 120,762.95, 166,645.16 and 67,047.95 is: 92,521.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,762.95 : 166,645.16 = 67,047.95 : x
  2. Step 2: Convert to fraction form
    120,762.95/166,645.16 = 67,047.95/x
  3. Step 3: Cross multiply
    120,762.95x = 166,645.16 × 67,047.95
  4. Step 4: Simplify right side
    120,762.95x = 11,173,215,186.96
  5. Step 5: Solve for x
    x = 11,173,215,186.96/120,762.95
  6. Step 6: Final answer
    x = 92,521.88

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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.