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Finding the Fourth Proportional to 163,275.76, 225,320.44 and 91,655.92

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Solution

The fourth proportional to 163,275.76, 225,320.44 and 91,655.92 is: 126,485.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,275.76 : 225,320.44 = 91,655.92 : x
  2. Step 2: Convert to fraction form
    163,275.76/225,320.44 = 91,655.92/x
  3. Step 3: Cross multiply
    163,275.76x = 225,320.44 × 91,655.92
  4. Step 4: Simplify right side
    163,275.76x = 20,651,952,223.00
  5. Step 5: Solve for x
    x = 20,651,952,223.00/163,275.76
  6. Step 6: Final answer
    x = 126,485.11

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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.