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Finding the Fourth Proportional to 111,034.90, 166,515.90 and 40,905.10

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Solution

The fourth proportional to 111,034.90, 166,515.90 and 40,905.10 is: 61,344.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,034.90 : 166,515.90 = 40,905.10 : x
  2. Step 2: Convert to fraction form
    111,034.90/166,515.90 = 40,905.10/x
  3. Step 3: Cross multiply
    111,034.90x = 166,515.90 × 40,905.10
  4. Step 4: Simplify right side
    111,034.90x = 6,811,349,541.09
  5. Step 5: Solve for x
    x = 6,811,349,541.09/111,034.90
  6. Step 6: Final answer
    x = 61,344.22

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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.