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Finding the Fourth Proportional to 135,334.75, 186,759.68 and 74,904.11

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Solution

The fourth proportional to 135,334.75, 186,759.68 and 74,904.11 is: 103,366.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,334.75 : 186,759.68 = 74,904.11 : x
  2. Step 2: Convert to fraction form
    135,334.75/186,759.68 = 74,904.11/x
  3. Step 3: Cross multiply
    135,334.75x = 186,759.68 × 74,904.11
  4. Step 4: Simplify right side
    135,334.75x = 13,989,066,680.49
  5. Step 5: Solve for x
    x = 13,989,066,680.49/135,334.75
  6. Step 6: Final answer
    x = 103,366.41

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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.