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Finding the Fourth Proportional to 168,768.48, 232,891.20 and 93,312

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Solution

The fourth proportional to 168,768.48, 232,891.20 and 93,312 is: 128,765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,768.48 : 232,891.20 = 93,312 : x
  2. Step 2: Convert to fraction form
    168,768.48/232,891.20 = 93,312/x
  3. Step 3: Cross multiply
    168,768.48x = 232,891.20 × 93,312
  4. Step 4: Simplify right side
    168,768.48x = 21,731,543,654.40
  5. Step 5: Solve for x
    x = 21,731,543,654.40/168,768.48
  6. Step 6: Final answer
    x = 128,765.42

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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.