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Finding the Fourth Proportional to 168,123.60, 232,007.40 and 91,643.40

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Solution

The fourth proportional to 168,123.60, 232,007.40 and 91,643.40 is: 126,466.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,123.60 : 232,007.40 = 91,643.40 : x
  2. Step 2: Convert to fraction form
    168,123.60/232,007.40 = 91,643.40/x
  3. Step 3: Cross multiply
    168,123.60x = 232,007.40 × 91,643.40
  4. Step 4: Simplify right side
    168,123.60x = 21,261,946,961.16
  5. Step 5: Solve for x
    x = 21,261,946,961.16/168,123.60
  6. Step 6: Final answer
    x = 126,466.17

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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.