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Finding the Fourth Proportional to 66,907.84, 100,348.80 and 63,577.60

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Solution

The fourth proportional to 66,907.84, 100,348.80 and 63,577.60 is: 95,354.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,907.84 : 100,348.80 = 63,577.60 : x
  2. Step 2: Convert to fraction form
    66,907.84/100,348.80 = 63,577.60/x
  3. Step 3: Cross multiply
    66,907.84x = 100,348.80 × 63,577.60
  4. Step 4: Simplify right side
    66,907.84x = 6,379,935,866.88
  5. Step 5: Solve for x
    x = 6,379,935,866.88/66,907.84
  6. Step 6: Final answer
    x = 95,354.09

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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.