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Finding the Fourth Proportional to 163,543.69, 225,696.69 and 91,923.49

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Solution

The fourth proportional to 163,543.69, 225,696.69 and 91,923.49 is: 126,858.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,543.69 : 225,696.69 = 91,923.49 : x
  2. Step 2: Convert to fraction form
    163,543.69/225,696.69 = 91,923.49/x
  3. Step 3: Cross multiply
    163,543.69x = 225,696.69 × 91,923.49
  4. Step 4: Simplify right side
    163,543.69x = 20,746,827,426.25
  5. Step 5: Solve for x
    x = 20,746,827,426.25/163,543.69
  6. Step 6: Final answer
    x = 126,858.01

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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.