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Finding the Fourth Proportional to 66,577.80, 99,866.70 and 41,694.60

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Solution

The fourth proportional to 66,577.80, 99,866.70 and 41,694.60 is: 62,541.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,577.80 : 99,866.70 = 41,694.60 : x
  2. Step 2: Convert to fraction form
    66,577.80/99,866.70 = 41,694.60/x
  3. Step 3: Cross multiply
    66,577.80x = 99,866.70 × 41,694.60
  4. Step 4: Simplify right side
    66,577.80x = 4,163,902,109.82
  5. Step 5: Solve for x
    x = 4,163,902,109.82/66,577.80
  6. Step 6: Final answer
    x = 62,541.90

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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.