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Finding the Fourth Proportional to 356,989.40, 492,641.16 and 195,845.68

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Solution

The fourth proportional to 356,989.40, 492,641.16 and 195,845.68 is: 270,264.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,989.40 : 492,641.16 = 195,845.68 : x
  2. Step 2: Convert to fraction form
    356,989.40/492,641.16 = 195,845.68/x
  3. Step 3: Cross multiply
    356,989.40x = 492,641.16 × 195,845.68
  4. Step 4: Simplify right side
    356,989.40x = 96,481,642,976.19
  5. Step 5: Solve for x
    x = 96,481,642,976.19/356,989.40
  6. Step 6: Final answer
    x = 270,264.73

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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.