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Finding the Fourth Proportional to 74,484.90, 111,623.67 and 57,863.70

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Solution

The fourth proportional to 74,484.90, 111,623.67 and 57,863.70 is: 86,715.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,484.90 : 111,623.67 = 57,863.70 : x
  2. Step 2: Convert to fraction form
    74,484.90/111,623.67 = 57,863.70/x
  3. Step 3: Cross multiply
    74,484.90x = 111,623.67 × 57,863.70
  4. Step 4: Simplify right side
    74,484.90x = 6,458,958,553.78
  5. Step 5: Solve for x
    x = 6,458,958,553.78/74,484.90
  6. Step 6: Final answer
    x = 86,715.01

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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.