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Finding the Fourth Proportional to 192,705.89, 288,987.01 and 66,310.79

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Solution

The fourth proportional to 192,705.89, 288,987.01 and 66,310.79 is: 99,441.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,705.89 : 288,987.01 = 66,310.79 : x
  2. Step 2: Convert to fraction form
    192,705.89/288,987.01 = 66,310.79/x
  3. Step 3: Cross multiply
    192,705.89x = 288,987.01 × 66,310.79
  4. Step 4: Simplify right side
    192,705.89x = 19,162,955,322.13
  5. Step 5: Solve for x
    x = 19,162,955,322.13/192,705.89
  6. Step 6: Final answer
    x = 99,441.46

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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.