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Finding the Fourth Proportional to 111,806.60, 167,364.30 and 64,920.20

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Solution

The fourth proportional to 111,806.60, 167,364.30 and 64,920.20 is: 97,179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,806.60 : 167,364.30 = 64,920.20 : x
  2. Step 2: Convert to fraction form
    111,806.60/167,364.30 = 64,920.20/x
  3. Step 3: Cross multiply
    111,806.60x = 167,364.30 × 64,920.20
  4. Step 4: Simplify right side
    111,806.60x = 10,865,323,828.86
  5. Step 5: Solve for x
    x = 10,865,323,828.86/111,806.60
  6. Step 6: Final answer
    x = 97,179.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.