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Finding the Fourth Proportional to 121,014.30, 166,999.71 and 68,022.30

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Solution

The fourth proportional to 121,014.30, 166,999.71 and 68,022.30 is: 93,870.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,014.30 : 166,999.71 = 68,022.30 : x
  2. Step 2: Convert to fraction form
    121,014.30/166,999.71 = 68,022.30/x
  3. Step 3: Cross multiply
    121,014.30x = 166,999.71 × 68,022.30
  4. Step 4: Simplify right side
    121,014.30x = 11,359,704,373.53
  5. Step 5: Solve for x
    x = 11,359,704,373.53/121,014.30
  6. Step 6: Final answer
    x = 93,870.76

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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.