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Finding the Fourth Proportional to 156,956.88, 216,599.44 and 85,336.88

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Solution

The fourth proportional to 156,956.88, 216,599.44 and 85,336.88 is: 117,764.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,956.88 : 216,599.44 = 85,336.88 : x
  2. Step 2: Convert to fraction form
    156,956.88/216,599.44 = 85,336.88/x
  3. Step 3: Cross multiply
    156,956.88x = 216,599.44 × 85,336.88
  4. Step 4: Simplify right side
    156,956.88x = 18,483,920,419.35
  5. Step 5: Solve for x
    x = 18,483,920,419.35/156,956.88
  6. Step 6: Final answer
    x = 117,764.32

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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.