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Finding the Fourth Proportional to 356,864.90, 492,478.48 and 195,709.32

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Solution

The fourth proportional to 356,864.90, 492,478.48 and 195,709.32 is: 270,081.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,864.90 : 492,478.48 = 195,709.32 : x
  2. Step 2: Convert to fraction form
    356,864.90/492,478.48 = 195,709.32/x
  3. Step 3: Cross multiply
    356,864.90x = 492,478.48 × 195,709.32
  4. Step 4: Simplify right side
    356,864.90x = 96,382,628,435.43
  5. Step 5: Solve for x
    x = 96,382,628,435.43/356,864.90
  6. Step 6: Final answer
    x = 270,081.56

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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.