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Finding the Fourth Proportional to 167,356.61, 230,953.61 and 91,905.65

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Solution

The fourth proportional to 167,356.61, 230,953.61 and 91,905.65 is: 126,830.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,356.61 : 230,953.61 = 91,905.65 : x
  2. Step 2: Convert to fraction form
    167,356.61/230,953.61 = 91,905.65/x
  3. Step 3: Cross multiply
    167,356.61x = 230,953.61 × 91,905.65
  4. Step 4: Simplify right side
    167,356.61x = 21,225,941,646.90
  5. Step 5: Solve for x
    x = 21,225,941,646.90/167,356.61
  6. Step 6: Final answer
    x = 126,830.61

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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.