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Finding the Fourth Proportional to 163,518.92, 225,655.16 and 91,898.32

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Solution

The fourth proportional to 163,518.92, 225,655.16 and 91,898.32 is: 126,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,518.92 : 225,655.16 = 91,898.32 : x
  2. Step 2: Convert to fraction form
    163,518.92/225,655.16 = 91,898.32/x
  3. Step 3: Cross multiply
    163,518.92x = 225,655.16 × 91,898.32
  4. Step 4: Simplify right side
    163,518.92x = 20,737,330,103.33
  5. Step 5: Solve for x
    x = 20,737,330,103.33/163,518.92
  6. Step 6: Final answer
    x = 126,819.15

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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.