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Finding the Fourth Proportional to 239,072.80, 358,369.60 and 111,079.01

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Solution

The fourth proportional to 239,072.80, 358,369.60 and 111,079.01 is: 166,507.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,072.80 : 358,369.60 = 111,079.01 : x
  2. Step 2: Convert to fraction form
    239,072.80/358,369.60 = 111,079.01/x
  3. Step 3: Cross multiply
    239,072.80x = 358,369.60 × 111,079.01
  4. Step 4: Simplify right side
    239,072.80x = 39,807,339,208.47
  5. Step 5: Solve for x
    x = 39,807,339,208.47/239,072.80
  6. Step 6: Final answer
    x = 166,507.18

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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.