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Finding the Fourth Proportional to 156,781.40, 234,912.90 and 133,453.40

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Solution

The fourth proportional to 156,781.40, 234,912.90 and 133,453.40 is: 199,959.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.40 : 234,912.90 = 133,453.40 : x
  2. Step 2: Convert to fraction form
    156,781.40/234,912.90 = 133,453.40/x
  3. Step 3: Cross multiply
    156,781.40x = 234,912.90 × 133,453.40
  4. Step 4: Simplify right side
    156,781.40x = 31,349,925,208.86
  5. Step 5: Solve for x
    x = 31,349,925,208.86/156,781.40
  6. Step 6: Final answer
    x = 199,959.47

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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.