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Finding the Fourth Proportional to 61,412.76, 92,140.92 and 35,139.60

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Solution

The fourth proportional to 61,412.76, 92,140.92 and 35,139.60 is: 52,721.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,412.76 : 92,140.92 = 35,139.60 : x
  2. Step 2: Convert to fraction form
    61,412.76/92,140.92 = 35,139.60/x
  3. Step 3: Cross multiply
    61,412.76x = 92,140.92 × 35,139.60
  4. Step 4: Simplify right side
    61,412.76x = 3,237,795,072.43
  5. Step 5: Solve for x
    x = 3,237,795,072.43/61,412.76
  6. Step 6: Final answer
    x = 52,721.86

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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.