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Finding the Fourth Proportional to 338,830.56, 467,642.16 and 187,976.16

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Solution

The fourth proportional to 338,830.56, 467,642.16 and 187,976.16 is: 259,438.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,830.56 : 467,642.16 = 187,976.16 : x
  2. Step 2: Convert to fraction form
    338,830.56/467,642.16 = 187,976.16/x
  3. Step 3: Cross multiply
    338,830.56x = 467,642.16 × 187,976.16
  4. Step 4: Simplify right side
    338,830.56x = 87,905,577,490.91
  5. Step 5: Solve for x
    x = 87,905,577,490.91/338,830.56
  6. Step 6: Final answer
    x = 259,438.16

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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.