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Finding the Fourth Proportional to 176,362.31, 243,246.62 and 122,620.43

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Solution

The fourth proportional to 176,362.31, 243,246.62 and 122,620.43 is: 169,123.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,362.31 : 243,246.62 = 122,620.43 : x
  2. Step 2: Convert to fraction form
    176,362.31/243,246.62 = 122,620.43/x
  3. Step 3: Cross multiply
    176,362.31x = 243,246.62 × 122,620.43
  4. Step 4: Simplify right side
    176,362.31x = 29,827,004,230.76
  5. Step 5: Solve for x
    x = 29,827,004,230.76/176,362.31
  6. Step 6: Final answer
    x = 169,123.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.