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Finding the Fourth Proportional to 156,647.80, 216,173.23 and 85,027.20

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Solution

The fourth proportional to 156,647.80, 216,173.23 and 85,027.20 is: 117,337.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,647.80 : 216,173.23 = 85,027.20 : x
  2. Step 2: Convert to fraction form
    156,647.80/216,173.23 = 85,027.20/x
  3. Step 3: Cross multiply
    156,647.80x = 216,173.23 × 85,027.20
  4. Step 4: Simplify right side
    156,647.80x = 18,380,604,461.86
  5. Step 5: Solve for x
    x = 18,380,604,461.86/156,647.80
  6. Step 6: Final answer
    x = 117,337.14

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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.