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Finding the Fourth Proportional to 66,251.53, 91,428.29 and 37,957.33

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Solution

The fourth proportional to 66,251.53, 91,428.29 and 37,957.33 is: 52,381.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,251.53 : 91,428.29 = 37,957.33 : x
  2. Step 2: Convert to fraction form
    66,251.53/91,428.29 = 37,957.33/x
  3. Step 3: Cross multiply
    66,251.53x = 91,428.29 × 37,957.33
  4. Step 4: Simplify right side
    66,251.53x = 3,470,373,774.87
  5. Step 5: Solve for x
    x = 3,470,373,774.87/66,251.53
  6. Step 6: Final answer
    x = 52,381.79

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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.