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Finding the Fourth Proportional to 156,853.68, 216,460.08 and 85,234.80

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Solution

The fourth proportional to 156,853.68, 216,460.08 and 85,234.80 is: 117,625.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,853.68 : 216,460.08 = 85,234.80 : x
  2. Step 2: Convert to fraction form
    156,853.68/216,460.08 = 85,234.80/x
  3. Step 3: Cross multiply
    156,853.68x = 216,460.08 × 85,234.80
  4. Step 4: Simplify right side
    156,853.68x = 18,449,931,626.78
  5. Step 5: Solve for x
    x = 18,449,931,626.78/156,853.68
  6. Step 6: Final answer
    x = 117,625.11

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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.