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Finding the Fourth Proportional to 156,777.40, 234,906.90 and 133,449.40

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Solution

The fourth proportional to 156,777.40, 234,906.90 and 133,449.40 is: 199,953.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,777.40 : 234,906.90 = 133,449.40 : x
  2. Step 2: Convert to fraction form
    156,777.40/234,906.90 = 133,449.40/x
  3. Step 3: Cross multiply
    156,777.40x = 234,906.90 × 133,449.40
  4. Step 4: Simplify right side
    156,777.40x = 31,348,184,860.86
  5. Step 5: Solve for x
    x = 31,348,184,860.86/156,777.40
  6. Step 6: Final answer
    x = 199,953.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.