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Finding the Fourth Proportional to 409,553.40, 613,892.70 and 156,736.20

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Solution

The fourth proportional to 409,553.40, 613,892.70 and 156,736.20 is: 234,936.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,553.40 : 613,892.70 = 156,736.20 : x
  2. Step 2: Convert to fraction form
    409,553.40/613,892.70 = 156,736.20/x
  3. Step 3: Cross multiply
    409,553.40x = 613,892.70 × 156,736.20
  4. Step 4: Simplify right side
    409,553.40x = 96,219,209,005.74
  5. Step 5: Solve for x
    x = 96,219,209,005.74/409,553.40
  6. Step 6: Final answer
    x = 234,936.91

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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.