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Finding the Fourth Proportional to 111,541.80, 167,369.40 and 74,127.90

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Solution

The fourth proportional to 111,541.80, 167,369.40 and 74,127.90 is: 111,229.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,541.80 : 167,369.40 = 74,127.90 : x
  2. Step 2: Convert to fraction form
    111,541.80/167,369.40 = 74,127.90/x
  3. Step 3: Cross multiply
    111,541.80x = 167,369.40 × 74,127.90
  4. Step 4: Simplify right side
    111,541.80x = 12,406,742,146.26
  5. Step 5: Solve for x
    x = 12,406,742,146.26/111,541.80
  6. Step 6: Final answer
    x = 111,229.53

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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.