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Finding the Fourth Proportional to 61,231.76, 91,848.10 and 16,860.94

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Solution

The fourth proportional to 61,231.76, 91,848.10 and 16,860.94 is: 25,291.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,231.76 : 91,848.10 = 16,860.94 : x
  2. Step 2: Convert to fraction form
    61,231.76/91,848.10 = 16,860.94/x
  3. Step 3: Cross multiply
    61,231.76x = 91,848.10 × 16,860.94
  4. Step 4: Simplify right side
    61,231.76x = 1,548,645,303.21
  5. Step 5: Solve for x
    x = 1,548,645,303.21/61,231.76
  6. Step 6: Final answer
    x = 25,291.54

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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.