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Finding the Fourth Proportional to 111,462, 167,179.56 and 28,356.72

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Solution

The fourth proportional to 111,462, 167,179.56 and 28,356.72 is: 42,531.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,462 : 167,179.56 = 28,356.72 : x
  2. Step 2: Convert to fraction form
    111,462/167,179.56 = 28,356.72/x
  3. Step 3: Cross multiply
    111,462x = 167,179.56 × 28,356.72
  4. Step 4: Simplify right side
    111,462x = 4,740,663,972.64
  5. Step 5: Solve for x
    x = 4,740,663,972.64/111,462
  6. Step 6: Final answer
    x = 42,531.66

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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.