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Finding the Fourth Proportional to 61,287.03, 91,930.55 and 48,208.77

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Solution

The fourth proportional to 61,287.03, 91,930.55 and 48,208.77 is: 72,313.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,287.03 : 91,930.55 = 48,208.77 : x
  2. Step 2: Convert to fraction form
    61,287.03/91,930.55 = 48,208.77/x
  3. Step 3: Cross multiply
    61,287.03x = 91,930.55 × 48,208.77
  4. Step 4: Simplify right side
    61,287.03x = 4,431,858,499.88
  5. Step 5: Solve for x
    x = 4,431,858,499.88/61,287.03
  6. Step 6: Final answer
    x = 72,313.16

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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.