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Finding the Fourth Proportional to 85,066.80, 127,619.57 and 25,907.09

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Solution

The fourth proportional to 85,066.80, 127,619.57 and 25,907.09 is: 38,866.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,066.80 : 127,619.57 = 25,907.09 : x
  2. Step 2: Convert to fraction form
    85,066.80/127,619.57 = 25,907.09/x
  3. Step 3: Cross multiply
    85,066.80x = 127,619.57 × 25,907.09
  4. Step 4: Simplify right side
    85,066.80x = 3,306,250,918.12
  5. Step 5: Solve for x
    x = 3,306,250,918.12/85,066.80
  6. Step 6: Final answer
    x = 38,866.53

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1.5x scale

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.