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Finding the Fourth Proportional to 156,444.01, 215,893.20 and 84,824.05

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Solution

The fourth proportional to 156,444.01, 215,893.20 and 84,824.05 is: 117,057.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,444.01 : 215,893.20 = 84,824.05 : x
  2. Step 2: Convert to fraction form
    156,444.01/215,893.20 = 84,824.05/x
  3. Step 3: Cross multiply
    156,444.01x = 215,893.20 × 84,824.05
  4. Step 4: Simplify right side
    156,444.01x = 18,312,935,591.46
  5. Step 5: Solve for x
    x = 18,312,935,591.46/156,444.01
  6. Step 6: Final answer
    x = 117,057.44

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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.