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Finding the Fourth Proportional to 61,813.80, 92,720.70 and 22,399.20

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Solution

The fourth proportional to 61,813.80, 92,720.70 and 22,399.20 is: 33,598.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,813.80 : 92,720.70 = 22,399.20 : x
  2. Step 2: Convert to fraction form
    61,813.80/92,720.70 = 22,399.20/x
  3. Step 3: Cross multiply
    61,813.80x = 92,720.70 × 22,399.20
  4. Step 4: Simplify right side
    61,813.80x = 2,076,869,503.44
  5. Step 5: Solve for x
    x = 2,076,869,503.44/61,813.80
  6. Step 6: Final answer
    x = 33,598.80

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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.