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Finding the Fourth Proportional to 111,921.96, 167,952.06 and 45,362.64

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Solution

The fourth proportional to 111,921.96, 167,952.06 and 45,362.64 is: 68,071.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,921.96 : 167,952.06 = 45,362.64 : x
  2. Step 2: Convert to fraction form
    111,921.96/167,952.06 = 45,362.64/x
  3. Step 3: Cross multiply
    111,921.96x = 167,952.06 × 45,362.64
  4. Step 4: Simplify right side
    111,921.96x = 7,618,748,835.04
  5. Step 5: Solve for x
    x = 7,618,748,835.04/111,921.96
  6. Step 6: Final answer
    x = 68,071.97

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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.