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Finding the Fourth Proportional to 156,385.64, 215,806.92 and 92,685.62

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Solution

The fourth proportional to 156,385.64, 215,806.92 and 92,685.62 is: 127,903.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,385.64 : 215,806.92 = 92,685.62 : x
  2. Step 2: Convert to fraction form
    156,385.64/215,806.92 = 92,685.62/x
  3. Step 3: Cross multiply
    156,385.64x = 215,806.92 × 92,685.62
  4. Step 4: Simplify right side
    156,385.64x = 20,002,197,101.46
  5. Step 5: Solve for x
    x = 20,002,197,101.46/156,385.64
  6. Step 6: Final answer
    x = 127,903.03

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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.