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Finding the Fourth Proportional to 253,707.45, 350,116.43 and 138,990.26

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Solution

The fourth proportional to 253,707.45, 350,116.43 and 138,990.26 is: 191,806.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,707.45 : 350,116.43 = 138,990.26 : x
  2. Step 2: Convert to fraction form
    253,707.45/350,116.43 = 138,990.26/x
  3. Step 3: Cross multiply
    253,707.45x = 350,116.43 × 138,990.26
  4. Step 4: Simplify right side
    253,707.45x = 48,662,773,635.97
  5. Step 5: Solve for x
    x = 48,662,773,635.97/253,707.45
  6. Step 6: Final answer
    x = 191,806.64

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.