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Finding the Fourth Proportional to 61,041.75, 91,147.11 and 53,866.11

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Solution

The fourth proportional to 61,041.75, 91,147.11 and 53,866.11 is: 80,432.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,041.75 : 91,147.11 = 53,866.11 : x
  2. Step 2: Convert to fraction form
    61,041.75/91,147.11 = 53,866.11/x
  3. Step 3: Cross multiply
    61,041.75x = 91,147.11 × 53,866.11
  4. Step 4: Simplify right side
    61,041.75x = 4,909,740,253.44
  5. Step 5: Solve for x
    x = 4,909,740,253.44/61,041.75
  6. Step 6: Final answer
    x = 80,432.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.