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Finding the Fourth Proportional to 163,415.11, 225,533.92 and 91,795.11

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Solution

The fourth proportional to 163,415.11, 225,533.92 and 91,795.11 is: 126,689.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,415.11 : 225,533.92 = 91,795.11 : x
  2. Step 2: Convert to fraction form
    163,415.11/225,533.92 = 91,795.11/x
  3. Step 3: Cross multiply
    163,415.11x = 225,533.92 × 91,795.11
  4. Step 4: Simplify right side
    163,415.11x = 20,702,910,536.16
  5. Step 5: Solve for x
    x = 20,702,910,536.16/163,415.11
  6. Step 6: Final answer
    x = 126,689.08

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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.