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Finding the Fourth Proportional to 161,309.66, 222,619.79 and 96,781.32

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Solution

The fourth proportional to 161,309.66, 222,619.79 and 96,781.32 is: 133,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,309.66 : 222,619.79 = 96,781.32 : x
  2. Step 2: Convert to fraction form
    161,309.66/222,619.79 = 96,781.32/x
  3. Step 3: Cross multiply
    161,309.66x = 222,619.79 × 96,781.32
  4. Step 4: Simplify right side
    161,309.66x = 21,545,437,376.28
  5. Step 5: Solve for x
    x = 21,545,437,376.28/161,309.66
  6. Step 6: Final answer
    x = 133,565.70

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1.5x scale

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.