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Finding the Fourth Proportional to 192,788.76, 289,111.32 and 66,393.84

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Solution

The fourth proportional to 192,788.76, 289,111.32 and 66,393.84 is: 99,566.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,788.76 : 289,111.32 = 66,393.84 : x
  2. Step 2: Convert to fraction form
    192,788.76/289,111.32 = 66,393.84/x
  3. Step 3: Cross multiply
    192,788.76x = 289,111.32 × 66,393.84
  4. Step 4: Simplify right side
    192,788.76x = 19,195,210,722.27
  5. Step 5: Solve for x
    x = 19,195,210,722.27/192,788.76
  6. Step 6: Final answer
    x = 99,566.03

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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.