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Finding the Fourth Proportional to 223,317, 308,177.46 and 122,715

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Solution

The fourth proportional to 223,317, 308,177.46 and 122,715 is: 169,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,317 : 308,177.46 = 122,715 : x
  2. Step 2: Convert to fraction form
    223,317/308,177.46 = 122,715/x
  3. Step 3: Cross multiply
    223,317x = 308,177.46 × 122,715
  4. Step 4: Simplify right side
    223,317x = 37,817,997,003.90
  5. Step 5: Solve for x
    x = 37,817,997,003.90/223,317
  6. Step 6: Final answer
    x = 169,346.70

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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.