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Finding the Fourth Proportional to 163,193.76, 225,209.76 and 91,569.60

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Solution

The fourth proportional to 163,193.76, 225,209.76 and 91,569.60 is: 126,367.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,193.76 : 225,209.76 = 91,569.60 : x
  2. Step 2: Convert to fraction form
    163,193.76/225,209.76 = 91,569.60/x
  3. Step 3: Cross multiply
    163,193.76x = 225,209.76 × 91,569.60
  4. Step 4: Simplify right side
    163,193.76x = 20,622,367,639.30
  5. Step 5: Solve for x
    x = 20,622,367,639.30/163,193.76
  6. Step 6: Final answer
    x = 126,367.38

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1.5x scale

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.