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Finding the Fourth Proportional to 61,605.40, 92,408.10 and 55,384.60

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Solution

The fourth proportional to 61,605.40, 92,408.10 and 55,384.60 is: 83,076.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,605.40 : 92,408.10 = 55,384.60 : x
  2. Step 2: Convert to fraction form
    61,605.40/92,408.10 = 55,384.60/x
  3. Step 3: Cross multiply
    61,605.40x = 92,408.10 × 55,384.60
  4. Step 4: Simplify right side
    61,605.40x = 5,117,985,655.26
  5. Step 5: Solve for x
    x = 5,117,985,655.26/61,605.40
  6. Step 6: Final answer
    x = 83,076.90

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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.