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Finding the Fourth Proportional to 156,219.22, 215,581.44 and 84,597.60

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Solution

The fourth proportional to 156,219.22, 215,581.44 and 84,597.60 is: 116,744.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,219.22 : 215,581.44 = 84,597.60 : x
  2. Step 2: Convert to fraction form
    156,219.22/215,581.44 = 84,597.60/x
  3. Step 3: Cross multiply
    156,219.22x = 215,581.44 × 84,597.60
  4. Step 4: Simplify right side
    156,219.22x = 18,237,672,428.54
  5. Step 5: Solve for x
    x = 18,237,672,428.54/156,219.22
  6. Step 6: Final answer
    x = 116,744.10

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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.