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Finding the Fourth Proportional to 613,185, 919,829.34 and 169,953

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Solution

The fourth proportional to 613,185, 919,829.34 and 169,953 is: 254,943.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,185 : 919,829.34 = 169,953 : x
  2. Step 2: Convert to fraction form
    613,185/919,829.34 = 169,953/x
  3. Step 3: Cross multiply
    613,185x = 919,829.34 × 169,953
  4. Step 4: Simplify right side
    613,185x = 156,327,755,821.02
  5. Step 5: Solve for x
    x = 156,327,755,821.02/613,185
  6. Step 6: Final answer
    x = 254,943.87

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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.