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Finding the Fourth Proportional to 111,666.81, 154,180.65 and 68,704.11

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Solution

The fourth proportional to 111,666.81, 154,180.65 and 68,704.11 is: 94,861.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,666.81 : 154,180.65 = 68,704.11 : x
  2. Step 2: Convert to fraction form
    111,666.81/154,180.65 = 68,704.11/x
  3. Step 3: Cross multiply
    111,666.81x = 154,180.65 × 68,704.11
  4. Step 4: Simplify right side
    111,666.81x = 10,592,844,595.11
  5. Step 5: Solve for x
    x = 10,592,844,595.11/111,666.81
  6. Step 6: Final answer
    x = 94,861.17

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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.