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Finding the Fourth Proportional to 71,907.82, 99,245.73 and 45,073.60

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Solution

The fourth proportional to 71,907.82, 99,245.73 and 45,073.60 is: 62,209.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,907.82 : 99,245.73 = 45,073.60 : x
  2. Step 2: Convert to fraction form
    71,907.82/99,245.73 = 45,073.60/x
  3. Step 3: Cross multiply
    71,907.82x = 99,245.73 × 45,073.60
  4. Step 4: Simplify right side
    71,907.82x = 4,473,362,335.73
  5. Step 5: Solve for x
    x = 4,473,362,335.73/71,907.82
  6. Step 6: Final answer
    x = 62,209.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.