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Finding the Fourth Proportional to 120,775.98, 166,653.09 and 67,061.46

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Solution

The fourth proportional to 120,775.98, 166,653.09 and 67,061.46 is: 92,534.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,775.98 : 166,653.09 = 67,061.46 : x
  2. Step 2: Convert to fraction form
    120,775.98/166,653.09 = 67,061.46/x
  3. Step 3: Cross multiply
    120,775.98x = 166,653.09 × 67,061.46
  4. Step 4: Simplify right side
    120,775.98x = 11,175,999,528.91
  5. Step 5: Solve for x
    x = 11,175,999,528.91/120,775.98
  6. Step 6: Final answer
    x = 92,534.95

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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.