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Finding the Fourth Proportional to 61,208.80, 84,467.20 and 33,986.40

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Solution

The fourth proportional to 61,208.80, 84,467.20 and 33,986.40 is: 46,900.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,208.80 : 84,467.20 = 33,986.40 : x
  2. Step 2: Convert to fraction form
    61,208.80/84,467.20 = 33,986.40/x
  3. Step 3: Cross multiply
    61,208.80x = 84,467.20 × 33,986.40
  4. Step 4: Simplify right side
    61,208.80x = 2,870,736,046.08
  5. Step 5: Solve for x
    x = 2,870,736,046.08/61,208.80
  6. Step 6: Final answer
    x = 46,900.71

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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.