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Finding the Fourth Proportional to 111,719.60, 167,484.98 and 48,491.90

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Solution

The fourth proportional to 111,719.60, 167,484.98 and 48,491.90 is: 72,696.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,719.60 : 167,484.98 = 48,491.90 : x
  2. Step 2: Convert to fraction form
    111,719.60/167,484.98 = 48,491.90/x
  3. Step 3: Cross multiply
    111,719.60x = 167,484.98 × 48,491.90
  4. Step 4: Simplify right side
    111,719.60x = 8,121,664,901.66
  5. Step 5: Solve for x
    x = 8,121,664,901.66/111,719.60
  6. Step 6: Final answer
    x = 72,696.87

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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.