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Finding the Fourth Proportional to 121,063.68, 167,068.80 and 67,349.76

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Solution

The fourth proportional to 121,063.68, 167,068.80 and 67,349.76 is: 92,943.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,063.68 : 167,068.80 = 67,349.76 : x
  2. Step 2: Convert to fraction form
    121,063.68/167,068.80 = 67,349.76/x
  3. Step 3: Cross multiply
    121,063.68x = 167,068.80 × 67,349.76
  4. Step 4: Simplify right side
    121,063.68x = 11,252,043,583.49
  5. Step 5: Solve for x
    x = 11,252,043,583.49/121,063.68
  6. Step 6: Final answer
    x = 92,943.18

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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.