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Finding the Fourth Proportional to 288,953.76, 398,793.96 and 161,655.60

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Solution

The fourth proportional to 288,953.76, 398,793.96 and 161,655.60 is: 223,105.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,953.76 : 398,793.96 = 161,655.60 : x
  2. Step 2: Convert to fraction form
    288,953.76/398,793.96 = 161,655.60/x
  3. Step 3: Cross multiply
    288,953.76x = 398,793.96 × 161,655.60
  4. Step 4: Simplify right side
    288,953.76x = 64,467,276,880.18
  5. Step 5: Solve for x
    x = 64,467,276,880.18/288,953.76
  6. Step 6: Final answer
    x = 223,105.86

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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.