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Finding the Fourth Proportional to 61,159.30, 91,738.95 and 53,383.30

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Solution

The fourth proportional to 61,159.30, 91,738.95 and 53,383.30 is: 80,074.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,159.30 : 91,738.95 = 53,383.30 : x
  2. Step 2: Convert to fraction form
    61,159.30/91,738.95 = 53,383.30/x
  3. Step 3: Cross multiply
    61,159.30x = 91,738.95 × 53,383.30
  4. Step 4: Simplify right side
    61,159.30x = 4,897,327,889.54
  5. Step 5: Solve for x
    x = 4,897,327,889.54/61,159.30
  6. Step 6: Final answer
    x = 80,074.95

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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.