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Finding the Fourth Proportional to 111,719.10, 167,484.24 and 48,491.40

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Solution

The fourth proportional to 111,719.10, 167,484.24 and 48,491.40 is: 72,696.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,719.10 : 167,484.24 = 48,491.40 : x
  2. Step 2: Convert to fraction form
    111,719.10/167,484.24 = 48,491.40/x
  3. Step 3: Cross multiply
    111,719.10x = 167,484.24 × 48,491.40
  4. Step 4: Simplify right side
    111,719.10x = 8,121,545,275.54
  5. Step 5: Solve for x
    x = 8,121,545,275.54/111,719.10
  6. Step 6: Final answer
    x = 72,696.12

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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.