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Finding the Fourth Proportional to 61,316.78, 91,909.73 and 34,964.78

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Solution

The fourth proportional to 61,316.78, 91,909.73 and 34,964.78 is: 52,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,316.78 : 91,909.73 = 34,964.78 : x
  2. Step 2: Convert to fraction form
    61,316.78/91,909.73 = 34,964.78/x
  3. Step 3: Cross multiply
    61,316.78x = 91,909.73 × 34,964.78
  4. Step 4: Simplify right side
    61,316.78x = 3,213,603,489.31
  5. Step 5: Solve for x
    x = 3,213,603,489.31/61,316.78
  6. Step 6: Final answer
    x = 52,409.85

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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.