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Finding the Fourth Proportional to 66,461.80, 99,692.70 and 44,343.40

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Solution

The fourth proportional to 66,461.80, 99,692.70 and 44,343.40 is: 66,515.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,461.80 : 99,692.70 = 44,343.40 : x
  2. Step 2: Convert to fraction form
    66,461.80/99,692.70 = 44,343.40/x
  3. Step 3: Cross multiply
    66,461.80x = 99,692.70 × 44,343.40
  4. Step 4: Simplify right side
    66,461.80x = 4,420,713,273.18
  5. Step 5: Solve for x
    x = 4,420,713,273.18/66,461.80
  6. Step 6: Final answer
    x = 66,515.10

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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.