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Finding the Fourth Proportional to 111,649.53, 167,100.06 and 91,657.92

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Solution

The fourth proportional to 111,649.53, 167,100.06 and 91,657.92 is: 137,179.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,649.53 : 167,100.06 = 91,657.92 : x
  2. Step 2: Convert to fraction form
    111,649.53/167,100.06 = 91,657.92/x
  3. Step 3: Cross multiply
    111,649.53x = 167,100.06 × 91,657.92
  4. Step 4: Simplify right side
    111,649.53x = 15,316,043,931.48
  5. Step 5: Solve for x
    x = 15,316,043,931.48/111,649.53
  6. Step 6: Final answer
    x = 137,179.65

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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.