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Finding the Fourth Proportional to 91,718.56, 137,554.75 and 35,539.39

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Solution

The fourth proportional to 91,718.56, 137,554.75 and 35,539.39 is: 53,300.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,718.56 : 137,554.75 = 35,539.39 : x
  2. Step 2: Convert to fraction form
    91,718.56/137,554.75 = 35,539.39/x
  3. Step 3: Cross multiply
    91,718.56x = 137,554.75 × 35,539.39
  4. Step 4: Simplify right side
    91,718.56x = 4,888,611,906.60
  5. Step 5: Solve for x
    x = 4,888,611,906.60/91,718.56
  6. Step 6: Final answer
    x = 53,300.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.