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Finding the Fourth Proportional to 121,276.53, 167,361.71 and 67,561.67

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Solution

The fourth proportional to 121,276.53, 167,361.71 and 67,561.67 is: 93,235.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,276.53 : 167,361.71 = 67,561.67 : x
  2. Step 2: Convert to fraction form
    121,276.53/167,361.71 = 67,561.67/x
  3. Step 3: Cross multiply
    121,276.53x = 167,361.71 × 67,561.67
  4. Step 4: Simplify right side
    121,276.53x = 11,307,236,702.25
  5. Step 5: Solve for x
    x = 11,307,236,702.25/121,276.53
  6. Step 6: Final answer
    x = 93,235.16

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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.