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Finding the Fourth Proportional to 119,241.22, 178,728.61 and 51,695.28

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Solution

The fourth proportional to 119,241.22, 178,728.61 and 51,695.28 is: 77,485.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,241.22 : 178,728.61 = 51,695.28 : x
  2. Step 2: Convert to fraction form
    119,241.22/178,728.61 = 51,695.28/x
  3. Step 3: Cross multiply
    119,241.22x = 178,728.61 × 51,695.28
  4. Step 4: Simplify right side
    119,241.22x = 9,239,425,537.96
  5. Step 5: Solve for x
    x = 9,239,425,537.96/119,241.22
  6. Step 6: Final answer
    x = 77,485.16

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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.