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Finding the Fourth Proportional to 187,642.71, 258,905.43 and 111,123.63

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Solution

The fourth proportional to 187,642.71, 258,905.43 and 111,123.63 is: 153,326.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,642.71 : 258,905.43 = 111,123.63 : x
  2. Step 2: Convert to fraction form
    187,642.71/258,905.43 = 111,123.63/x
  3. Step 3: Cross multiply
    187,642.71x = 258,905.43 × 111,123.63
  4. Step 4: Simplify right side
    187,642.71x = 28,770,511,208.31
  5. Step 5: Solve for x
    x = 28,770,511,208.31/187,642.71
  6. Step 6: Final answer
    x = 153,326.03

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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.